Quote:
Originally Posted by ember1205
Did you have them epoxied as per the TSB?
The problem you encountered, from what I understand, was on originally installed NPP systems. Correct? And wasn't it addressed by a change to the valves in newer versions of the exhaust?
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Yeah twice, and it kept coming back. So I said to hell with it and bought a non NPP axleback. Not sure but it happens to a lot of people with NPP. My buddy has a 2018 (mine is 2017) and his rattles and buzzes.