I have a 2000 Banshee with fmf pipes, k&n air filter, and boost bottle. I am planning on getting a cool head and ram valve. Which ones are the best and how do I decide what dome to get? How much more speed and power will I get with those mods and what jet would anyone recommend? Thanks for any help...

 

I think 19cc domes are the smallest you can put on before having to run race gas.

 

You need to run at least 50/50 race gas with the 19 domes. You should be safe running pump gas with the 20's. It all depends on the compression you end up with, and the octane of your fuel.