Jetting question

[infinity450r]

I have an 05 trx 450r with an FmF Factory 4 pipe and a power bomb head pipe....It also is running an open air box wiht a knN air filter....If anyone is running theres the same way with right jettiing please let me know cause i can not figure out the jetting on it for the life of me...lol...I am right now running a 178 main and i think i am too big and i never touched the pilot or anything..


Thanks

[juiced450r]

My girlfriend has an 05 with a white brothers full exhaust pipe and open K&N. On the dyno we had to jump up to a 195 and HRC needle to make the air fuel ratio to stay around 12.5. I would say a 195-200 would be sufficient.

[MR.BIG]

I have the mods listed in my sig. and I am running a 190 main jet its sounds like you are running kinda of lean but i guess it depends on your elevation too.