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LiqTenExp · 05-13-2022, 10:49 PM

Not the answer you want to hear but could magnaflow sport, this was my decision years ago and do not regret it. They keep NPP valves on that system.

To put NPP back on you are going to have to murder up that exhaust. You'd have to cut off muffler and put in a Y before it, cut post muffler Y out, attach one tip to muffler, mount valve and tip to extension of pre-muffler Y.

Attached is what the borla S w/npp system looks like

05-13-2022, 10:49 PM	#2
LiqTenExp Drives: 2017 ZL1 Join Date: Jan 2017 Location: NJ Posts: 926	Not the answer you want to hear but could magnaflow sport, this was my decision years ago and do not regret it. They keep NPP valves on that system. To put NPP back on you are going to have to murder up that exhaust. You'd have to cut off muffler and put in a Y before it, cut post muffler Y out, attach one tip to muffler, mount valve and tip to extension of pre-muffler Y. Attached is what the borla S w/npp system looks like Attached Images __________________ 2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93) Last edited by LiqTenExp; 05-13-2022 at 10:59 PM.