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 cars (e.g. Gruppe M intake kits, DMS Automotive ECU remap)? 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? Looks great on paper but I'm wondering what it's like in practice...