Quote Originally Posted by abdul kariim View Post
i have heard that if you put a 325i...or 328i......manifold air / throttle sw/valve on a 320i you achieve lots more oooomph......for minimal effort and outlay.........is this fact or a jackanory....?.....has anyone actually done this mod n what was the rate of change....?
thanks so much.................................new to forum.................abdul kariim in cambridge

I had installed a 325i manifold/ BBTB/ M3 equal length header with Full M3 exhaust system/ Underdrive pulley/ Tuned with unichip, i managed to get 191bhp on the dyno. after tuning, it drives so good. but i still feel it lacks the ooooomph from a tuned 328i. once thing my tuner and I found out was that once you de cat, the power was up to 197.5bhp.