Hello 
Just wanted to ask whether I should straight pipe, remove the muffler or get an aftermarket one. I've seen that apparently straight pipes don't sound good but I just want to get a second opinion, as it is relatively cheap to do. My Z4 is a sDrive 23i and I want a bit more volume.
Thanks

Just wanted to ask whether I should straight pipe, remove the muffler or get an aftermarket one. I've seen that apparently straight pipes don't sound good but I just want to get a second opinion, as it is relatively cheap to do. My Z4 is a sDrive 23i and I want a bit more volume.
Thanks
