Jetting for t4?

[jesshamner]

What is the specific jetting for a t4 pipe. My dealership gave me a 152 main. I am not for sure what the elevation is here in southern Indiana. It seems like it is backfiring a lot when I slow down and when it is cold it sounds horrible.

[Team Outlaw #34]

well i live in minnesota and i have a 158 main jet....so you need to increase your main jet....and also i have a 42 pilot jet....that would be a good idea to increase your pilot as well....

hope that helped....

[Extremeracer167]

Well with a K&N we were running 158s in both a T4 and FMF PC4. And ran stock pilot and it ran GREAT. BUT, its winter now so u might have to go a tad bigger