Removing emission control system

[bwarbiany]

Hey,
While we're talking about the difference between CA bikes and 49-state bikes, I know several people who have simply removed their PAIR (emissions control) system. I don't think it really gives the bike any more power, per se, but I think it might help it run a little better. I can find more info on it if anyone's really interested, or has anyone down here done this?

Brad

[Natedawgg]

I'm totally interested.

[Burst]

Rod and I were talking to this guy up on Ortega last weekend and he said it really isn't that hard to do....... He said the biggest pain in the ass is the O2 injector on the rear of the engine, I guess it is next to impossible to get a wrench around it.

[buymenow00]

Has anyone heard that this surgery actually helps anything?

[rick77f]

Ok here it goes. The PAIR system injects air into the combustion chamber after combustion is complete. The idea is that the oxygen being pumped in will ignite any unburned fuel on the way out. The PAIR valve is vacuum controlled. When you close the throttle, vacuum opens the valve and air is drawn out of the airbox into each cylinder's exhaust port. I plugged mine off and the only difference I found on my bike was that the occasional popping that takes place in the combustion chamber moved to the pipe and was much louder.
Now about the vapor recovery cannister. Just like all the cars you buy here in CA, our motorcycles are equipped with a vapor recovery cannister. Instead of venting gasoline vapor into the atmosphere, it is collected into a charcoal-carbon cannister to be saved and re-introduced to the carbs when needed. This helps pollution matters some, but certainly has no ill effect on performance. It saves you gas, but very little. I don't even mess with taking it off since it bothers nothing. I hope this helps. If anybody wants a diagram of the systems mentioned above let me know and I'll E-mail you one. rick77f@yahoo.com

[SVixxer]

Is there any significant horsepower gain from removing the emissions equipment? I read that some people here taken it off. If it is only minor then I would probably wnat to keep it on.

[linp]

I don't think I'll worry too much about it. Probably just extra weight. You're in CT with a CA bike?

[SVixxer]

I don't have a cal bike. But Massachusetts uses the same equipment as Cal now. I do have emission equip on mine. I am basically a knowledge hound, thats why I asked.

[dnakase]

The only "benefit" I know of is in dissabeling the canister. If you tend to overfill the gas tank you run the risk of saturating the canister which can cause the bike to stall under some conditions.

The days of 49 state bikes is numbered due to EPA rules.

[No_Brakes23]

When I got my crash damage fixed and my full system installed, The shop charged me a $75 "lighten bike" fee which after a brief explanation, I gather involved the removal of all emissions control equipment.

This makes my bike technically street illegal.

I couldn't say if there was a gain in power, because the bike is SOOOO much faster from the full system/jet kit/K&N/dyno-tune, that I wouldn't notice a slight gain in power.

[RACERX]

if its has nit performance gain than fuck it

[2KSV650]

I have a CA model SV. I'm not familar with removing of the smog sensors and stuff. Will it give me more pony's:confused: if any one could help and let me know that would be grate. Is it simple to bypass? (I have the full service manual).

Matt

[Kurt'sSV]

Don't know if removing that stuff makes a difference or not.

But hey, you have to '750 front end, and that's cool!

[Burst]

Pretty simple to strip all the stuff off. You do need two block off plates for the exhaust port air injectors. It doesn't give you any performance gains, just gets rid of the nasty backfires with aftermarket exhausts.

[SoloToto]

Can you buy the block off plates or do you have to fab them?
Exactly what pieces can be removed? (what they look like, where located?)

[2KSV650]

I know it's on the right side of the bike just below the gas tank. As far as the plate covers ? :confused:

[Burst]

The pair valve which controls the air injectors is located on the right side of the bike under the tank. It is bolted to the top tube of the frame. It is connected to the airbox and one vacuum hose. (both need to be plugged after you remove the pair valve) It is also connected to two black hoses that connect to a piece of steel tubing. That steel tubing is bolted to the cylinder heads just under each exhaust header. This is the location where you need to put the block off plates. I made my own so I am not sure where you would get them. The rear one is a little tough, but if you have small hands it shouldn't be too much trouble.

[johnnySV]

can somebody elighten me in detail about the PAIR mod and what it does. i have searched other posts and have been unsuccessful at finding satisfying answers. also - is this only on CA model bikes ??

also, are ther other airbox plumbing mods that ya'll are making with regard to re-routing some breather hoses, etc (not snorkelectomy.... thats obvious)

thanks !

[bwarbiany]

Originally posted by johnnySV
can somebody elighten me in detail about the PAIR mod and what it does. i have searched other posts and have been unsuccessful at finding satisfying answers. also - is this only on CA model bikes ??

CA bikes only... They put some extra crap in there, and we like to take it off...

I hear it makes almost no difference though...

[Orpheos]

The Pair valve puts air into the exhaust ports to burn unspent fuel in your headers. With the stock pipe you can't hear the backfires but with an aftermarket pipe the backfiring is pretty bad. Pulling them off does nothing to performance, but it does let more unspent fuel out. And it stops the backfiring.

[sarge]

Originally posted by Burst
This is the location where you need to put the block off plates. I made my own so I am not sure where you would get them.
what did you use to block it off after removal. didn't you say you made something? mine backfires more and more all the time

[Burst]

I just used some scrap aluminum from an old sprocket. Used a jig saw to cut it out then a disc sander to finish off the edges.

[sarge]

i think i may have some scrap aluminum foil. Maybe that won't work. i'll have to bug the bike shop. Thanks

[Burst]

just go over to California Metals in El Cajon. They should have some very cheap....

[sarge]

i'll go bug national city motorcycle. they have like a junkyard upstairs. i'll just find something and be like "you ever gonna use this", and they'll say, "don't know what it is, so have at it". or they will tell me to go to hell and never come back again.

[Burst]

...........or they will tell me to go to hell and never come back again......

You get that too? Whew... thought it was just me.

[focus]

I'm lazy. I want to do the PAIR valve mod without using block off plates. Is that a good idea? Can I just use vacuum tube plugs? TIA

[smolvar]

Originally posted by rick77f
When you close the throttle, vacuum opens the valve and air is drawn out of the airbox into each cylinder's exhaust port.

Cold air into super hot exhaust port.
The extreme temp differances cant be good for the valves.

Nissan had this problem on their early Pathfiners where the exhuast manifolds didnt seal. In colder climates the valves eventually cracked and/or became damaged due to cold air entering a very hot exhuast port.

Can anyone speak on this point?

[Reddog99]

Cold air into super hot exhaust port.
The extreme temp differences cant be good for the valves.
There are millions & millions of cars, trucks, & motorcycles on the road with air injection systems. If it caused problems, I don't think it would be much of a secret. The flow of exhaust gasses is AWAY from the exhaust valve, and at a pretty high rate. It's very doubtful that the tiny amount of cool air that comes thru the PAIR pipes (unpressurized) could back up against the exhaust flow to get to the valves.

I used to hear that same story when I was young, only back then it said that straight pipes would crack the valves. Different story, same bullshit. :p

Pat

[smolvar]

Well I agree with your answer, however whats the reason it works?
I guess if its is AWAY from the valve, that could compensate.

The physics says cool air + hot exhuast valve = metal fatigue.

[Reddog99]

Originally posted by smolvar
Well I agree with your answer, however whats the reason it works?
I guess if its is AWAY from the valve, that could compensate.

The physics says cool air + hot exhaust valve = metal fatigue.
The fresh air pipe outlet is downstream of the exhaust valve. The valve is never exposed to that air because the flow is away from the valve.

I personally don't believe that the cool air would harm the valve even if it did get exposed to it. The valve would just be cooled a bit, and the amount of air that flows thru isn't large anyway.

Pat

[stingray]

no 1 explained how to actually get to the rear piping but it's cool. it was a hassle but i got it off myself.

note:
you do need to take the rear spiggot off as well as the exhaust system to get to the rear pipe/cylinder. unless you have the fancy expensive snap on ratchet wrenches, i don't see how it's possible even w/ small hands to get to the 2 rear nuts.

it's easier to plug up the rubber end w/ a bolt or an old sparkplug or something. the rear pipe is a hassle and a half.

[Burst]

Stingray, I was able to do it with a swivel attachment on an extension. It was a pain as I do not have small hands and once you stuff your hand in there it is impossible to see the studs you are trying to get to.

The thing that helped the most was wedging the nut into the socket with a piece of paper. (so much for fancy tools hehehe)

[stingray]

tried that, the nut wouldn't seat properly and i almost rounded the sucker off:sad:

[POS24HR]

Purpose; To eliminate "backfire" on both 03 SV's.
This will get rid of the backfire on the 03 and 1000.

Cost; about 5 bucks.
Time; about 1/2 hour

Many TL owners and others have removed the PAIR valves, with elaborate methods involving blockoff plates and all kinds of crazy stuff. Here is a quick way to do it.

This is the most bulletproof method to get rid of backfires when letting off the throttle on downhills etc associated with the stock bike etc. It will also be effective with other aftermarket exhausts.

On the 03 SV's this process is so simple it's funny.
This method leaves everything hooked up and easily reversible.
Also it is very undetectable to the dealer without actually being told that it's disabled and how it's disabled I doubt someone would find it.

What's needed;
2 - 3/16" vacuum plugs(auto parts store)
2 - small bolts ( say 4mm) about 1/2 in. (Home depot)

How:
#1 Raise gas tank. locate PAIR Hose on top of rear cylinder valve cover. It is about 3/8 in in diameter and located off to the side of the spark plug. Slide back the spring clamp and disconnect the hose from the plastic(composite) elbow(PAIR reed housing) attached to the valve cover.
#2 Now moisten the vacuum plug and insert it into the plastic elbow/fitting end round nose first. Now seat it all the way into the fitting the with a small allen wrench until seated, then insert the small bolt into the hole behind the rubber plug you just inserted, The object here is to screw the bolt/screw into the vaccuum plug's inside to expand it against the walls and seal the opening.
#3 Once you have this done, simply replace the hose and it's clamp.
#4 Now repeat this process for the front cylinder(same process)
To do this you can remove the radiator bolt(10mm) and swing it forward to gain easier access.

You are done... Now enjoy backfire free riding, and rest assured that no dealer will even detect this, unless you tell him.

[No_Brakes23]

I thought some people liked the backfire.

[POS24HR]

Some do...but some of us are running Twin RS3 Race Yosh's and that is not very attaractive to cops when he is waiting for "someone" at the bottom of the hill, and you are in 6th...
Get my drift?:D

[pinkyblake]

you will see lots of abled pairs today! pms hooters

[Ipaki]

**** Question ****

Originally posted by POS24HR
Purpose; To eliminate "backfire" on both 03 SV's.
This will get rid of the backfire on the 03 and 1000.

cut>><<cut

On the 03 SV's this process is so simple it's funny.
This method leaves everything hooked up and easily reversible.
Also it is very undetectable to the dealer without actually being told that it's disabled and how it's disabled I doubt someone would find it.

that no dealer will even detect this, unless you tell him.

why should no dealer detect this "plug":confused:

I payed fully for my bike, I'm the owner, and i can do what ever i wish to do with it!!

Or is it something with the CA law????:(

Buxie (Di thomss)

[SV650k3]

Is there a proper way of blocking or bypassing the hose coming off the fuel vapor separator inside the tank? Will it damage any emissions equipment if I do? I need to replace the tank on my '03 and ronayers.com has the non-E33 tank for $40 - $50 less than the E33 version.

[BluBallz]

good question i think... not sure what the e33 stuff is all about... anyone available to shed light on the subject?

just a note, try PM'ing pinkyblake

[SV650k3]

Sorry, I should have just put Ca model... E33 is California model, I think this designator applies from '99 on.

[POS24HR]

Talking about keeping your warranty intact...
Sure you can do whatever you like with your bike, but I am sure that modifying the emissions equipment(if detected by a dealer)could void your warranty if you were trying to get warranty work done in regards to say performance or fuel injection system etc.
Mods are great, but sometimes you just don't want to flaunt them to dealers considering work under warranty.

[TonyCadillac]

When trying to block air off in the pair valve 03 SV do I have to do both hoses or just the main one coming down. I was also wondering what material I should use to seal the hose. I'm just second guessing myself, and need some second opinions. I hate screwing stuff up. I 'm doing this to get rid of the exhaust popping. I have a brand new power commander that doesn't stop the popping, like I was told before I bought it. Thanks....

[rb643]

On my 02, I disconnected both hoses from the valve and plugged them by kinking and tie wrapping them. Ya, it's hokey, but it works. The best thing is to use block off plates. Check out this thread:

http://www.socalsvriders.com/forums/showthread.php?s=&threadid=4456&highlight=block+off+plates

[TonyCadillac]

Fixed it. No popping at all. Took me about 5 mins. I took the main hose coming down to the pair lines out, dropped a screw that would fit inside and taped over it. That's it. Runns great....

[CDNSV650S]

On the 2003, the pair hoses attach to some electronic gizmo and a valve on the bottom of the airbox.

Obviously this is the controller for opening and closing the valve controlling the PAIR system.

Does anyone know if that electric connector can safely be disconnected without screwing other stuff up?

I want to remove the entire PAIR system to lose weight for racing. I never even noticed any backfiring but the extra weight will make a difference to me.

[SteveNZ]

Originally posted by CDNSV650S
On the 2003, the pair hoses attach to some electronic gizmo and a valve on the bottom of the airbox.

Obviously this is the controller for opening and closing the valve controlling the PAIR system.

Does anyone know if that electric connector can safely be disconnected without screwing other stuff up?

I want to remove the entire PAIR system to lose weight for racing. I never even noticed any backfiring but the extra weight will make a difference to me.

Just out of interest, a picture with locations of the mountings, (and torque settings should you wish to mount blocking plates and be sure of not stripping casing threads) is on page 24 of the "Servicing information" part of the service manual from the downloads section.

The PAIR hose is a bit of a monster, it's gotta make doing future work on the bike simpler if the whole system, including the control valve can be ripped off (would make it easier to get at the plugs for a start). I can't find any electrical connection to the valve system which is a biggy, and I suspect that it's just a simple pressure valve and should therefore be perfectly safe to lose. But I'm far from being an expert...

Looking at the base plate for the Renegade airkit, all there is where the PAIR valve sits is a mounting hole, so that suggests that it isn't too integral to the box.

[SteveNZ]

Here's a method of bypassing the PAIR injector that takes about 30 seconds to install, and requires _NO_ tools! :)

All you need is a vacuum plug, approx 1/3" diameter.

Go to the right-hand side of the bike, and through one of the triangular sections of the frame immediately below the tank is an upside-down T shape made by 3 hoses.

Push the spring-clamp on the top hose up, and remove the hose from the T junction (should be able to do this with your fingers.)

Put the vacuum plug into the hose facing downwards. (Open end of the plug facing upwards). You'll need to poke the plug about a half inch up the hose so it'll actually fit back over the T junction.

Refit the hose, re-seat the retaining clip.

That's it!

The suction generated by the PAIR reed-valves will pull the vacuum plug onto the slightly cupped top portion of the T junction and will block off the air intake. If your vacuum plug is a bit too small, run some insulation tape around the outside (make sure it isn't going to come off, no idea what problems that could cause).

This is all I've done on my bike, and it's taking a bit of getting used to the much quieter exhaust during decellerations! :-)

I seriously doubt it's as a result, probably due to cold tyres, but I've never had a bike step the rear tyre sideways under heavy acceleration on dry metal roads before having done this. Might have something done to the suspension mods and the service that got done on the bike yesterday ;-)

I was just gonna stuff some cardboard wrapped in tape into it, but decided that was a bit too gumby even for me!

Enjoy.

[Ric]

What is the PAIR emissions control system and is it only on California versions ???

[Reddog99]

It ducts fresh air into the exhaust pipe to lower emissions and has no performance impact. I don't know about the fuel injected bikes, but it used to be only for the California bikes on the carb models.

Pat

[Ric]

Ha Ha....what a joke !!!

[paul14814]

I'm replacing the engine in my 2000 SV 650 with a motor from a California edition 2002 SV 650. All has gone well so far until I start remounting the carbs. My 2000 engine did not have any emisions control, but this 2002 California motor does.
THE FACTS: There are two lines coming off the coolant reservoir tank. One winds around to the back of the bike near the battery compartment and "T's" off then winds back around to where the carbs are. The other is located near the bottom of the coolant reservoir tank and is about 14" in length.
THE ISSUE: These hoses (lines) were not present on the previous engine / carb set up
THE QUESTION: Do either or both of those lines connect to the carbs, and if so, where?

[paul14814]

All the details you can fit onto these pages would be GREAT! I'm stuck working on a PAIR valve issue. I can't ride until I get this figured out.

Thanks very loudly!

[Silver6]

I personally wouldn't recommend removing or modifying any emissions systems on any California model bikes. I believe the number one benefit is dropping a little bit of weight, I'd guess about 2-3 pounds if that but there are no other dramatic or noticeable performance improvements. From what I understand, the emissions controls also extracts fuel vapors that develop in the tank and filter it through a charcoal cannister (for the ZX6R 636, at least) and is sent into the exhaust system where it is burned (I think). Sounds pretty efficient to me, whereas 49-stater bikes allow the fuel vapors to vent through the gas cap. This is why 49-stater bikes sometimes get choked up because the gas caps aren't always cleaned and are sometimes blocked by tank bags.

If you guys are doing this simply to reduce weight from the bike, I have a better idea... eat 1 less meal per week.

[fourstrokin]

I am considering doing an emissions removal on my 03 SV1000S. I have read this entire post and nobody mentions what to do with the vapor separator hose that comes out of the tank. Does it need to stay open or can it be plugged? Is there another regular vent in the tank somewhere? The Pair mod is a no-brainer, but the emissions canister diagram in the manual does not show another vent.

[Silver6]

By all means, you are entitled to do whatever you want to your bike but may I ask what you intend with this? I don't mean to sound offensive at all, but I am truly curious. Clearly there have been no significant benefits to either the pair mod or emissions removal so why do it? The weight reduction is subjective unless you're racing but it looks like you've got a very powerful bike already.

I would imagine that the vapor separator hose should not be plugged as the accumulation of vapors (since the CA gas caps aren't vented) will cause hesitation and stalling.

[fourstrokin]

I see no need for extra crap on my bike. It's for simplicity. They are obviously not necessary items and if it eliminates the backfires, I am all for it. Plus, I am suspicious of a possible emissions equipment problem on my bike right now that causes a hicup every once in a while. If disconnecting this stuff fixes the problem and I don't have to let some bonehead at the dealer tell me he could not find the problem, then I like that too. It's reversible, and it makes my bike easier to work on if that stuff isn't in my way, so I see no harm in it.

[Silver6]

I see no harm in it as well, as far as the bike goes. I just thought the emissions idea was a good one since it does reduce a good amount of harmful substances into the environment. However, I guess it's useless when you see all the old cars that haven't passed a smog test in centuries choking you up in your helmet (I especially hate it when I end up behind one at a stop light and there's no way for me to squeeze through). Oh well...

[elstevedore]

Hi everyone, 2 questions.

1) I am interested in disabling the PAIR system on my 99 SV650 to eliminate the popping on decel. Can anyone point me at some step by step instructions for this procedure. It looks simple enough, and I was about to just plug the hose from the PAIR valve to the airbox, but I figured I should maybe check first.

2) While looking for the answer to the question above, I learned about the TRE mod. Do 1999 Naked California SV650s have the timing retard mechanism? And if so is there really much performance gain with the TRE mod?

Thanks a lot, -Steve

[03sv rider]

To block the PAIR valve:

On the right side of the bike through the frame you will see a hose that leads from the airbox to a T shaped fitting. Simply remove the hose clamp, pull off the hose where it connects to the upside down "T" and block off the hose. Some people use bolts/screws, others use ball bearings, just make sure it can't fit though the fitting. Once blocked, reconnect the hose and clamp and you're in business!

Hope this helps

[McTwig]

what exactly does disabling PAIR do? what other effect does it have besides stopping the popping on decel? im guessing this works on 03s too?

[03sv rider]

Disabling the PAIR only stops the popping on decel and yes it can be done on an 03 (I did it to mine). As far as drawbacks, not sure i have not noticed any.

[elstevedore]

Yeah, it's kind of like a smog pump on a car engine. The only drawback would be higher HC emissions, but compared to the folks who drive SUVs to work everyday, I don't think it's that big a deal.

-Steve

[Mohawk]

I just purchased a califronia model bike and want to swap a 49 state tank onto it. I noticed that the cali tank has 2 posts at the back of the tank where as the 49 state has only 1 post to connect a hose to. I am guessing this is because of the pair system.

For anyone who knows, can I just block off the hose going to this second post or do I need to remove the whole pair system?

[Mohawk]

Someone knows.

Basically can I disconnect and block off the hose going from the back of the gas tank to the pair system on a california bike.

I have the bike apart and want to put it back together and I am afraid to just do it and have something blow up or something......I don't know anything about the pair system.

[Tom]

You can just leave that hose disconnected without blocking it off.

[Mohawk]

Sweet, I knew one of you racers would know. I bought this cali bike with the purpose of throwing my old body on it, but never thought about the pair system.

Thanks Tom

[newbe]

removing the PAIR wont realy gain you anything but it does make a big diffrence in the emmision the bike makes. I wont remove the PAIR on my bike cause it can reduce the CO & HC by as much as 90%. Yes i know all about it cause im certified smog tech :angel: . I do know how it works, so you wont get any out of removing it. Just my two cents.


Alex

[Mohawk]

I wasn't interested in removing it unless I had to. As my earlier posts state, I have a 49 state tank that I want to put on a california model bike. The tank does not have the extra post for the pair system, I didn't know if by just disconnecting the hose if it would cause problems.

[Jehanzeb]

Originally posted by newbe
removing the PAIR wont realy gain you anything but it does make a big diffrence in the emmision the bike makes. I wont remove the PAIR on my bike cause it can reduce the CO & HC by as much as 90%. Yes i know all about it cause im certified smog tech :angel: . I do know how it works, so you wont get any out of removing it. Just my two cents.


Alex


Agreed!

Since there are no performance gains, I see no need to remove the PAIR system off my '99 as well.

Just one more cleaner running 'street' bike on the 'streets'.........isn't that what the PAIR valve was designed for originally?

Jehanzeb.

[newbe]

The pair system is there to burn the fuel that didnt burn in the cly. On the exh stroke it sucks extra fresh air to keep burning what ever fuel there was. It uses the heat from the exh to keep burning. As its working of the exh vacuume pulse it takes no power from the engine what so ever.


Alex

[Tom]

aperaceparts.com and inturace.com has the block-off plates. Those will come with gaskets. I was also taught to just cut off the tubes from the stock parts and weld the holes shut. Auto parts stores sell gaskets by the sheet and this would be the cheaper option if you have welding equipment.

[2WHEELTONY]

This is my first post on your site, pretty cool site by the way. Any ways my first sport bike was an 89 fzr 600 used and the person I bought it from put on a full yosh exhaust and i noticed he diconected all the smog enabling devices to give it the performance of th 49 state models. I allredy added a pipie and a k&n filter to my 05 sv650s but is there any thing else i can do to increase the horse power?

Thanks Tony

[kc1717]

sell it :) jk

[CHiRS92109]

i bought a sv650 2006 a couple of months ago in california. im trying to figure out all the things that need to be removed to get rid of the emission crap. i already put a full exhaust on it so that gets rid of the catalytic converter. my friend with his rc-51 mentioned block plates? what else is there and is it easy?

[SVSRyder]

its umm..not worth the hassle for the insignifigant power gain of roughly 2-3 HP imho.

[CHiRS92109]

i would still like to do it, i dont like that my bike is a little less than every other sv650 sold elsewhere, i also have fun messing around with that stuff.

[Kyoseki]

As far as I'm aware, the only difference between the CA models and the rest of the country are:

1: Catalytic converters in the exhaust
2: Carbon filter thing in the gas tank that stops the tank venting to the outside air directly.

I suspect that fixing number 2 would require a new, non CA gas tank, so you might as well not bother and just live with the fact that your tank is slightly smaller than a non CA bike's.

[CHiRS92109]

im cool with the smaller gas tank but i think there are 2 other things also, ill call my friend and post them

alright so there are three things according to my friend

1. the gas tank which ill leave
2. catalytic converter which i took care of
3.PAIR valves

he said to fix the pair valves order some smog block off plates and you have to disconnect a few hoses and "stuff"

he said the PAIR valves let air back into the engine at some point cant remember what he said now and it is used to help get rid of unexpended fuel. whatever it does he said its bad and to get rid of them to help the engine.

anyone have any thoughts?

[Lonedog]

your engine is tuned to run with max efficiency the way it rolled out the factory.

any alterations will only decrease efficiency increase engine wear and make it run rougher for 2 or 3 extra BHP it simply is not worth the money or effort.

that is why you should leave it alone.

in fact i don't believe that disabling the Pair valve will give you any increase in BHP at all.

at best you will loss maybe 1 or 2 pounds off the center mass of the bike again no real performance gain.

[mojo mofo]

Originally posted by CHiRS92109
i would still like to do it, i dont like that my bike is a little less than every other sv650 sold elsewhere,

Seems like you need a big truck to help with the "little man's" syndrome :rolleyes:

[Tom]

Originally posted by Lonedog
any alterations will only. . .increase engine wear

Revving and riding the thing will also increase engine wear, so whats your point? :p :D

The only dyno that matters to me is my butt dyno, and even though removing the pair stuff didn't make a difference on my dyno, getting rid of all that eyesore (I have severe excessive compulsive disorder) was the best free mod I did to the bike.

Intuitive and APE sells block-off plates, but I was taught to just cut off the tubes on the original plates and have the holes welded shut. ;) This is on the 99-02 bikes....I don't know if the newer bikes are the same.

[Kyoseki]

Originally posted by CHiRS92109
he said to fix the pair valves order some smog block off plates and you have to disconnect a few hoses and "stuff"

he said the PAIR valves let air back into the engine at some point cant remember what he said now and it is used to help get rid of unexpended fuel. whatever it does he said its bad and to get rid of them to help the engine.

anyone have any thoughts?
The PAIR system is not California specific, every SV has them, including my 1000.

What it does is inject air into the exhaust gases to burn off unspent fuel.

To remove it (mostly to save yourself weight and stop backfiring if you have a race muffler), you need to get blanking plates to cover the holes you'll be left with when you take off the PAIR valves and you need a resistor to solder into the electronics to fool the computer into thinking the PAIR valve is still there.

You can get a kit to do it from www.chewys-stuff.co.uk

I have the kit but haven't got around to it yet.

[NiteQwill]

Or if you want to eliminate backfire... You can plug the PAIR system.... Then again, that's a different topic all together.

[soulofadra6o]

or just get a faster bike

[Lonedog]

"Revving and riding the thing will also increase engine wear, so whats your point?"

my point is reeving and riding is normal engine wear.

altering a highly tunned engine will easily double the amount of wear on your engine.

for next to no power gain you have just cut the life Span of your engine in half.

and thrown and away hundred's or thousands of dollars in the process.

for no reason other than to be a stupid sqwidly moron that thinks that the bike makes you go faster.

when the reality is it is you the rider that makes the bike go faster.

P.S. you = who ever not necessarily you.

[SurfCityHommie]

wait! I'll get the popcorn :D

[Tom]

lol Save the popcorn.

I got it the first time, Lonedog. Just f**king around. :)

[Lonedog]

Cool Np wasn't sure is all.

after all there are some real frigging geniuses out there ;) and joke's an sarcasm are easily lost in this format.