I have the stock rear muffler with AA midpipe. I know MPE cracks in general because I've seen a few people crack theirs. It been really hot at the tracks lately. I melted my stock rear diffuser at Thill last month lol.
I havent registered yet but I'm planning to go with SpeedSF in December or November. Might do another Thill event around those times as well. Hoping that the weather cools down. M2C ran perfectly fine in 112 degree weather on the track
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