i currently run MBRP headers and the MBRP race pipe. im switching to a white brothers e series disck pipe (because im having trouble with silver lake sand dunes letting me in with the mbrp)

will i need to rejet again? i started to jet it myself and did "half the battle" by putting the new needle and stuff in but i whimped out and had my local shop do the rest of the work...

i beleive its running on the rich side now because the other day while starting it i fouled BOTH plugs! (both looked black as hell and i couldnt even clean them they were so bad...)

does More backpressure (less flow) in an exhaust make the bike run LEANER? if so the new pipe might help lean the bike out a bit?

i know im supposed to be looking for whitish tannish plugs...and BLACK dosnt seem to fit that description [img]i/expressions/face-icon-small-shocked.gif[/img]

im going to look now to see what main jet he used....

thanks in advance for the help guys

Mike

 

drop a jet size

 

i had a full jet kit but sold the extra main jets except for one above and one below what i had installed on my quad...
and of course i currently cannot find the two jets....

will running a more restricting pipe lean it out?

 

The White Brothers pipe isn't more restrictive! The disks may fool you but it flows fine......

 

im sure it flows fine...but the MBRP pipe is WIDE OPEN....no end cap, or discs, or screens or anything....