I haven’t noticed any difference performance-wise between stock, stealth (stinger in it), stealth+1” taller (stinger in it), stealth +1” taller + air stinger filter. Everything else with my M3W is stock except for brooklands exhaust. Not sure if it has baffles in it from factory. I would guess no based on how loud it is? I’ll probably take a look while car is in pieces when doing Bleazey Centa.
