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MAGAUSA · 06-08-2018, 10:55 AM

I’ve seen some reports of this. How prevalent is this and anyone know if it’s a warranty item?

My stock NPP rattles so much on one side I never use anything but track mode. Driving in Tour and esp Stealth brings this loud tinny rattle from the one side. But I’m looking for a functioning aftermarket and I’d need the valves for start ups and cruising in the neighborhood. More rattles would be disappointing.

Anyone with experience with this system?

Thanks

06-08-2018, 10:55 AM	#1
MAGAUSA Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016 Location: Tampa Posts: 579	Flowmaster Am Thunder NPP valve rattle? I’ve seen some reports of this. How prevalent is this and anyone know if it’s a warranty item? My stock NPP rattles so much on one side I never use anything but track mode. Driving in Tour and esp Stealth brings this loud tinny rattle from the one side. But I’m looking for a functioning aftermarket and I’d need the valves for start ups and cruising in the neighborhood. More rattles would be disappointing. Anyone with experience with this system? Thanks