I'm looking for more power in my 2000 Z3M Roadster - had it for a year and want more speed!
Anyone out there with experience of modifying or seen modified ZM or M3s (e.g. with Gruppe M intake/Ram kits, DMS Automotive ECU remap)? What sort of (real world not just Dyno) gains to you see with these kits? Any problems?
I'm especially interested in supercharger conversions, but don't want to wreck the engine, so am looking for someone with a year or more experience in a supercharged car...what are the best conversions in terms of reliability and power gain?
My car's a pre-DSC model so am also looking at traction/launch control systems - anyone tried the Racelogic kit in an M car? Looks great on paper with adjustable slide and launch control, but I'm wondering what it's like in practice...