[Richbot]

I have the aFe 300-cell catted xpipe with my MPE, I've had it on the car for close to 20,000 miles now. I've had the MPE for more than 100,000 miles.

It rasps some in the same range the test pipes rasp, especially on cold start during which time it's absolutely obnoxious if you're in an enclosed garage, it sounds like a sport bike and a chainsaw and an old Chevy 302 having a three-way in a dumpster. I suppose I could delete the cold-start cycle and that would do away with it, but, it's theatre and most cars are boring AF so I've left it alone

But it sounds amazing once the car is warm. The thing I think it sounds most like is the NASCAR cup engines - it's very close to what you hear in the in-car video on those cars, to my ear, obviously about 15dB quieter. And it shuts up on the highway and at light throttle just like with the stock xpipe - that's a trick a racecar exhaust system can't pull off. I assume test pipes are the same way with the secondaries and resonators still in place. I don't notice any drone in any gear at any speed, if you lug the engine from low rpm of course it's bassier than stock, because you're at low rpm that's where the bass notes are

Either way, MPE ftw