Quote:
Originally Posted by _RS4_
If you remove the OPFs you won't match EU/CH emissions rules even if you keep the stock muffler.
|
Yes , you are right !
Same CAT - DME Tuning - Lower spring ( If is not omologate ) ecc ecc
Any modification even if approved by the EU / CH rules but not approved by BMW will it could cause you problems( if the car is leased even worse ) so to avoid any legal / warranty issue keep the car on stock .