Rotrex Supercharger 328i Questions
I just picked up the Rotrex supercharger kit with the c38-81 supercharger on it. I wanted to know what are some of the best modification I am ordering the Stage 2 upgrade to it tomorrow so that comes with a retune a bigger pulley and front mount.
they guy told me that i should do all the modifications before i get my car retuned because once i add something i will have to tune it again and as you guys know that **** ain't cheap.
So whats the Best Mods to Go with the Kit?? I am New to BMW But have build ALOT of other cars. Please let me know what my Best bet will be. my goal is to make about 400 rwhp