CAMARO6 - View Single Post - Exhaust NPP valve delete

LiqTenExp · 04-25-2022, 01:15 PM

Just enable Track mode in sound management control and they stay open under track conditions. Under WOT in any sound management mode the NPP will open (I believe even in stealth).

AFM is not NPP. ZL1's do not have the AFM valves.

Sounds like you have a quality control issue with the carbon fiber tips from Borla.

04-25-2022, 01:15 PM	#2
LiqTenExp Drives: 2017 ZL1 Join Date: Jan 2017 Location: NJ Posts: 905	Just enable Track mode in sound management control and they stay open under track conditions. Under WOT in any sound management mode the NPP will open (I believe even in stealth). AFM is not NPP. ZL1's do not have the AFM valves. Sounds like you have a quality control issue with the carbon fiber tips from Borla. __________________ 2017 Camaro ZL1 Coupe M6 (847whp Dynojet on 93)