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Flowmaster Pro Series Mufflers Part #13512100 Customer Reviews
1 Customer Review
Reviewed by Robert M (PORTLAND, OR) Reviewed for a 2014 GMC Sierra — Dec 28, 2015 8:47 PM
Trying to reduce drone in my truck especially towing. Temporarily mounted the Pro at the end of the tailpipe. Measured sound reduction at 3-4 dB with some drone reduction. Not the final answer when dealing with the drone issue.