you can even start with the diff mod!!! But ill start the cosmetic route first.. just makes every thing better! power, consumption, sound etc.. so its all in one!! Diff is just boom and bob is your uncle but it affects consumption quite a bit! As a Stock M3 gets about 10kms to the liter, and a chipped, zorst, filter M3 gets about 12.5!
Before diff change after all my crazy mods i got 14km's to the liter when on 130km/h cruize control!
Now its around 11.5-12 again on freeway, 7 in town and 1-2km's to the liter at full throttle!! :floggin: