Exhaust, no airbox lid - jetting suggestion?

[temeculacrf]

Hi,
My buddy has an '05 (might be an '06) TRX400EX. He just bought an FMF PowerBomb header, White Bros Slip-on, and plans to open the airbox. No other mods have been done.

We don't plan to use the dynojet kit...and plan to buy from jets-r-us. Where would you recommend we start on the main jet? What about the pilot?

We're in Southern California...1200ft.

Thanks in advance,
Gary

[400eXr1d3rZ]

Start with a 155 main and 42 pilot jet, 2.5 turns out air/fuel screw.

[temeculacrf]

Perfect! Exactly what I wanted to hear. I'll have him by several jets around 155, and also 40 and 42 pilots.

Thanks for the advice...we'll give it a shot.

Gary