As I stated above I want to mount a dual tip muffler instead of using the single tip muffler that's usually delivered with these catbacks. The muffler looks like this:



This one is street-legal without any registration in Germany and much less attention-whoring than the fat muffler. There is no silencer that I can put into it, but it's not that loud.

The main question was if the car will be drivable with the 3 inch catback. As I read out from previous posts it's not the best. I plan to turbocharge my car in the next 2 years and until then it's my daily driver. The only thing that really bothers me is: will the 2.5 inch catback without the second resonator be as quiet as the 3 inch catback? The system has to be as quiet as possible.

420a in Europe