CAMARO6 - View Single Post - Flowmaster American Thunder Dual Mode Axle-back (NPP) for 2016+ Camaro SS & ZL1

MAGAUSA · 04-07-2019, 03:54 PM

Mine has that hissing sound with the valves closed too. Much better than the stock "rattle" but still annoying.

04-07-2019, 03:54 PM	#150
MAGAUSA Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016 Location: Tampa Posts: 579	Mine has that hissing sound with the valves closed too. Much better than the stock "rattle" but still annoying.