Thread: 4CYL mode exhaust valve - non NPP eqp. cars
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Old 04-06-2016, 09:56 PM   #2
Glen e
Retired from Car mfrs....
 
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Drives: 2LT RS/HR-V
Join Date: May 2013
Location: /Fort Lauderdale
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No nothing opens for more sound, its just a good tuned exhaust.
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