Quote Originally Posted by Andy View Post
I've dealt with Steve from MSC before, his a top bloke. He also has a boosted S2K which means you guys will be best friends. Also in relation to your RBC and stock ECU question, I found that the car was a little jerky in gear 1 and 2. Good luck!
if you put RBC or RRC manifold and don't tune ECU you will looser power - tested long time ago. All tuning must begin from poper Engine managment. Even when you put exhaust header air fuel ratio goes to 13.5 without tune. It's a little bit on lean side for K24 engine.