hey guys. any one runnin a fmf complete factory 4 on there yfz. If so, what main and pilot jets, and what air/fuel screw setting are you using. im at around sea level. im using a 45 pilot and a 165 main jet with the fuel screw 2 3/4 out right now and it does a lot of deacceleration popping and seems to not pull as far through the tops of the gears either. It has a K&N filter too and i will be running with the lid on.

05 yfz
factory 4 complete
durablue axle
K&N filter

 

Go the the FMF website they have jetting recomendations, they might help.

 

why the lid on... the run ALOT better with it off... it gets the air it needs.
we had alot of trouble jetting my buddys yfz with the lid on... we finnaly convinced him to take it off and after that it was cake... i suggest trying it with it off.

 

I would try a bigger main mine is stock with the baffle removed @ 3000 feet and I am running a 168 main and a 45 pilot

 

Great pipe choice by the way! I absolutly love mine [img]i/expressions/face-icon-small-smile.gif[/img] I previously haven't been very happy with FMF quality but this pipe is built very well!

I'm running the NCVQ needle on the 4th, 175 main, and 45 pilot at sea level and it runs great! Haven't lost to another YFZ or 450R yet! [img]i/expressions/face-icon-small-happy.gif[/img] I had it checked on the dyno too and it's spot on!

 

You havent ran into the right one then [img]i/expressions/face-icon-small-wink.gif[/img]

 

Why would the "right" one be the one to beat me? What's the meaning of your reply? [img]i/expressions/face-icon-small-confused.gif[/img]

 

There are a lot of fast quads out there ... its only a matter of time before you get beat by another YFZ or TRX no matter how much $ or time you put into your bike. Is that easier to understand?

 

Well, I already knew that [img]i/expressions/face-icon-small-confused.gif[/img]

Just lettin him know how the pipe compared to others and so far very well! [img]i/expressions/face-icon-small-cool.gif[/img]

 

type daddog jetting into your search engine and go to the daddog jetting page. I think you'll find your answers there.