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almostinvincible119

High Comp Piston Jetting

3 posts in this topic

I have a 06 450 with brand new valves, a new wiseco HC piston, polished exhaust ports, and a Carbon Pro exhaust. I ride at sea level, and I was wondering with these new mods (the piston, valves-still TI, and the polished ports) would i need to richen up my main jet? or do anything else specifically?

thanks everyone in advance

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i added a hc piston from je, changed the valves. it was running rich after the mods. i went up one clip position on the needle. the bike runs great now and starts easier.

So im with gray, u should have to go leaner

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