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You can always modify the stock 135i exhaust to sound like a PE by opening it up and welding all the holes. Also do a golf-tee mod and then you just delete the resonator that’s just before the “axle-back” portion and it’s basically identical.
I love my PE exhaust and wish it would work when I do a 1M conversion in a few years but it won’t. I’ll have to figure out how to replicate the sound
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