End of last season I had a Stage 1 Kit fitted to my 2014 M3W with about 15.000 km.
Engine is running much better, I am very satisfied with the performance characteristic of the vehicle now.
Increased although ist also the noise level, I have to wear earplugs for every trip.
I am looking for some way to make the exhaust a bit more quiet, I also do not want to be checked by Police.
Has anybody any experience quieting the stage 1 exhaust?
Are db-killer systems any good? How much db do they kill?
Any advice please - thank you in advance.
