PAIR modification
 

Hi all, sorry to drag this thread from the distant past but I have a question.

I was reading the thread by Chewy (is he still around here by the way?) - http://forums.sv650.org/showthread.php?t=56239 where it discusses removing the pair system etc. No problems with the description except that it mentions the use of a resistor. I presume that resistor is to join the two wires from the ECU that run to the PAIR solenoid but it doesnt say this and also doesnt mention the value of resistor required.

Can anybody shed any light on this for me? ta.

Re: PAIR modification
 

I've since found this elsewhere.....

....so think I've answered my own question.

Re: PAIR modification
 

you going to make some square blanking plates for the rocker covers mike?

Re: PAIR modification
 

Yeah, either that or buy some. I see Chewy sells them as a set for £15 here http://www.chewys-stuff.co.uk/pair_r...650k3_pair.htm

Re: PAIR modification
 

Kool not seen them, i quite liked the popping on overun when i had my sv whats the advantages of removing it? just save abit of weight and tidy it up abit?

Re: PAIR modification
 

to be honest the main reason we tried to disable this this evening was to try and get sensible readings on my mates dyno. When the PAIR system is sucking fresh air into the exhaust chamber it gives false lean readings.

So then got to thinking what possible purpose it has on a race bike, none is my guess. So for a pretty simple mod you can simply get rid of it. Chewy suggests keeping the reed valves in place as they have a gasket built in, but then covering the gap over with these plates, blocking off the airbox hole left by the PAIR solenoid and then putting a 10K resistor across the wires to the ECU.

Re: PAIR modification
 

Can you just block the air feed to it?

Re: PAIR modification
 

Ahh rite yeah of course it would do yeah! like you say it has no place on a racebike. What sort of power where you getting on the dyno mike?

Re: PAIR modification
 

Yeah you can do mate.

Re: PAIR modification
 

Blocking off the tubes does pretty much the same thing, removing it simply tidies everything up nicely.

We didnt do any fuelling optimisation due to the sensor problem we had on the dyno but its currently giving 73bhp at the rear wheel so not bad really. Pretty strong motor. Torque was impressive too.

Re: PAIR modification
 

Sweet that is a nice figure what have you got on her? powercommander? obviously a full system and a filter anything else?

Re: PAIR modification
 

nope, thats pretty much it. Power Commander 3 USB, full Hindle Supersport system and a K&N filter. Stock engine with no mods. Pretty sure we can squeeze a few more horses out of it and smooth the curve a little.