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Old 04-05-2017, 06:20 PM   #8
Bow Tie Affair
 
Drives: 6th. Gen ZL1
Join Date: Jan 2017
Location: Texas
Posts: 424
Quote:
Originally Posted by exxit View Post
when I had straight pipes to NPP, it sounded like nascar at high rpms, but like raspcar at low (just nasty rattle rasp). The baffles closed sounded like absolute crap as well.

When i tossed the procharger on, my exhaust note definitely evolved, but by that time I had put my secondary cats back on. I'd like to add that I live in nazifornia... where all it takes is a cop having a bad day to turn a routine traffic stop into a state ref ordeal.
Quote:
Originally Posted by 2SS_in_GA View Post
I don't notice a drone really. What really annoys me is the way the NPP valves flutter at gear changes with the auto trans. Going to add some resonators or bullets probably. It's currently too loud for my old ass
Thanks for the replies fellas!
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