Well, I put on the pipes, rejetted with 260 mains that FMF provided. They also say to use 30 pilots which I am going to go pick up today.

One of the things that didnt sound right was the idle. If I just bairly tapped on the idle while it is in nuetral it would keep a higher rev for a bit untill I reved it high then it would come back down. Will the new pilots compensate for this?

Also I put on a Pro Flow intake system, pro design air filter with a outerware (I guess), yellow filter then a orange one that slipped over it.

Will I have to rejet for this also?

Thanks for any help.

 

Hey JIGA, mine did the same thing when I revved it. I took my carbs apart and cleaned them, because I think the slide was sticking. I haven't had the problem since. Also with the Pro flow, you don't have to rejet unless your running without a airbox lid. I have the FMF pipes, Pro design filter, and I removed the snorkel, and I'm running 260 mains.

 

The over-revving at idle is caused by a lean idle circuit. Going to 30 pilots and airscrews 1.5 turns out should fix this problem.

260 mains with the airboxlid ON sounds slightly lean for moderate temps at sealevel. I would probably start at 280.

My procedure for jetting a mildly modded shee (pipes, filter, no airbox lid):
1) Install 30 pilots with airscrews 1.5 turns out.
2) Leave needles in stock position
3) Start with large jets: 320 mains.
4) Warm bike thoughly. Attempt high speed runs. The bike should 'burble' at WOT. If it comes up on the pipe and does not burble, install the next larger mains ( 1 size = step of 10). Repeat until it burbles.
5) Drop one main jet size. This is the optimum jet for that temperature and altitude.

Some people will say that this is too rich. I contend that this is the SAFEST jetting method. Doing it this way will insure that you will not be too lean on top. Too rich will not hurt the motor; too lean will fry it over time.

 

Thanks for the replies guys, but I have to ask, outa you with the SST pipes, did you recieve pilot jets and the main 260 jets as well?

All I got was the pipes/silencers 260 mains and a lotta stickers, wheres the pilots!

I had to go up to my local yama dealer and order them since they were not on stock!