I currently have a Dinan exhaust on my 5-speed e46 325i and a BMW performance intake. Sounds pretty good winding the engine up and down, but still a tad quiet for my taste.

How would an x-pipe and tuned resonator from Supersprint make the car sound with my existing Dinan exhaust? is it ok to mix brands in the exhaust system? I don't want to have detrimental effect on performance as it's already a pretty slow car haha.

I couldn't find any examples except for the M3 on youtube.