PIM for motor work? or is cherry bomb enough

[Warnerade]

I have 2 heads down at RAGE ATV right now and am wondering if I will need to purchase the yoshimura PIM for both bikes or does the cherry bomb still produce the right amouth of air/fuel

[miller821]

Depends I'd say... What other types of mod's are you running with it?

And are you dead set on the PIM, or are you also thinking of the PCIII?

[Warnerade]

one is a practice head with just porting, the other is my race head with porting, oversized valves and cams

[quad59]

For the practice bike you might get away with just the crbm. On the race head you will have to get a pc3 or a pim. I personally like the pc3 because you can tune it with your laptop. There are also more places that have the autotune feature done on a dyno jet dyno that can tune off of your AF ratio with just two runs. I also know that Rage likes the PIM. Its up to you but if you get the pim I would get the femak just in case you need to change something.