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ajp · 06-13-2018, 09:46 AM

My Borla NPP does this too...usually when it kicks down from V8 to V4.

If I hold the pedal at the right spot, it makes a continuous flapping sound.

06-13-2018, 09:46 AM	#3
ajp 50th Anniversary Vert Drives: Camaro 2017 50th Anniversary Join Date: Jul 2009 Location: AZ Posts: 2,315 View My Garage	My Borla NPP does this too...usually when it kicks down from V8 to V4. If I hold the pedal at the right spot, it makes a continuous flapping sound. __________________