jetting for elev of 4000ft

[TRX450RACER174]

Well guys i need some thoughts i have a race coming up this weekend and it is around 4000ft in elevation, i have never raced at this altitude before and am wondering what do you guys think for jetting? I currently have a 162main and all the other hrc stuff should i just take some smaller jets and play with it out there i will only have a little time for testing, HELP ANYONE thanks.

[schmidthouse]

I have the same quad but do not race. I ride alot at Christmas Valley in Oregon that is 4000 ft. I have a Trx450er with HRC kit and full Muzzy exhaust with velocity filter. I run a 158 when it is cold and a 160 most of the time at that elevation. Hope it helps.

[TRX450RACER174]

Thanks i was talking to one of the guys at Denton racing and he said it would be fine so i am gonna leave it alone and adj the a/f screw.