I recently installed an OEM m2 muffler on my m235i and all I can say is it's worth every penny you don't realize how quiet the car sounds stock until you do the swap, even with my VRSF downpipe the car with OEM muffler is lacking tone. Considering how much M Perf exhaust is and the fact the m2 stock muffler sounds better (in my opinion) it's a win win , saves money and sounds great , downpipes and m2 muffler perfect exhaust sound not to loud not to quiet and sounds as good as any full system for this platform
I took some driving exhaust clips, I will take video of free revving but for now enjoy and I will upload more
The install was pretty straight forward same as M perf , I bought the OEM 80mm clamp and mounted it up with the quad exhaust and modified my stock diffuser to make it look decent but imo dual suits the car better so within a few days I went ahead and cut the quads off and had a shop weld on arms that ran to the diffuser and then slipped on my BMS Ceramic 3.5 inch slip on tips
With the M performance diffuser back on the whole thing looks factory
Let me know what you think , and I will add more to this thread to help anyone interested in the mod
:::::Just put up a cold start and Rev Video:::::