[Bimmer_boi_e92]

So I always wanted to make the exhaust on the 335i louder but keep the same tone still and somebody told me about test pipes. So did a little researcher but couldn't find anybody that has it for my car. So if anyone knows a good test pipe that would work and sound great with my car! By the way also just got HKS blow off valve and not sure if I should put it on yet or even should, any opinions or advice please let me know!

THANKS!!!