Quote:
Originally Posted by 70chevelleSS
Curious how the fit on this will be. I have the american thunder NPP on my SS and have thought about putting the Borla x pipe with secondary cat deletes.
I love the sound of exhaust although it drones pretty significantly with the valves open. Valves closed there is almost no drone though. Very deep and aggressive sound much better than stock NPP.
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When you say Valves closed, do you mean when the exhaust is in Stealth mode? Or when the car is in Touring/Sport/Track below a certain RPM range?
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Current - 2018 Camaro 1SS with MRC, 1LE Suspension, NPP Exaust, 6 Speed.
Past -
2016 Ford Mustang GT Performance Pack
2015 Camaro SS
2010 Ford Mustang GT