Flywheel does not give you HP; It's purpose is to allow the car to rev up faster as the engine has to move less mass to acheive a red line.
BMW's by nature are DOGS on the low end. a Flywheel will make that better, and one Vanos Kicks in... DAMN... better watch those RPM's, cause they are Snappy!.
That and a heavy turbo clutch. |