piston wash

[tobys670x]

03 900, slp air box,speedwerxs pipe and can,420 430 mains,: zr needles 3000 to 6000 ft. To rich? Thanks

 

[76FOMOCO]

just a tad to rich but if you have a real cold day down low you will make it.
you could come down about 1 size.

 

[Arctic Thunder]

just a tad to rich but if you have a real cold day down low you will make it.
you could come down about 1 size.

X2 I agree it is a bit fat but you won't be rebuilding it due to a lean burn down with your jetting. If it is running well and not fowling plugs I would leave it alone.

Thunder

 

[tobys670x]

Thanks for the responses. I am putting on a speedwerx head 14 to 1 and going to add a couple of gallons of race gas to a tank for the lower elevations.Do you think I will have to jet down?

 

[Arctic Thunder]

No, just make sure you add octane.

Thunder