Quote:
Originally Posted by itdnwiwbp
I've now had two weeks to throughly enjoy my new Stromung mufflers.
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+1
I got lucky and got a used set off a forum member here, and my wife and I are also very satisified. These are much more civil than the Diablos at idle and low-ish RPMs, and I'd argue that they sound *better* above 4K. I almost couldn't hear the Diablos over 4K, but these have a very even, deep tone.
Low RPMs (2-3K) under load there is some minor drone, but nothing unruly, and the sound from outside is deep, clean, and you get the nice "burble" when you let off the gas.
This is what the Z4M should have sounded like from the factory!