The car it was fitted to is a 2015 VW. Passat 1.8t TSI. I've been running a straight pipe from a KAT/downpipe for a while. There was a grinding noise at high RPMs and was loud all the time. This resonator (the name means silencer, but it's actually a resonator) was recommended to me by a MagnaFlow specialist. It removed 100% of the squeak as he said, it reduced exhaust significantly on city driving and cold starts, but it screams WOT but with ZERO squeaks. I am 100% satisfied with the sound (deep, not hoarse) and the quality of the resonator. I'm so glad I added this and wish I had done it sooner. Great job MagnaFlow!
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