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Nightfire · 06-08-2025, 06:44 AM

Hey everyone, looking for info on the NPP valve. I notice my Driver side doen't close when I put in stealth / snow ice mode but Passanger side works fine. If I remove the valve i can rotate the metle disk. If I start the car it moves/rotates all the way left. If I change modes it does move at all when it disconnected and not sure if it suposed to. If car is on and I try to rotate it it will not or it fights me to stay in the same postion. My question is, will it rotate when not connected to the exhust and does it need to be relearned somehow?

06-08-2025, 06:44 AM	#1
Nightfire Drives: 2018 Camaro 2SS Join Date: Sep 2017 Location: NC Posts: 14	NPP Info and Help Hey everyone, looking for info on the NPP valve. I notice my Driver side doen't close when I put in stealth / snow ice mode but Passanger side works fine. If I remove the valve i can rotate the metle disk. If I start the car it moves/rotates all the way left. If I change modes it does move at all when it disconnected and not sure if it suposed to. If car is on and I try to rotate it it will not or it fights me to stay in the same postion. My question is, will it rotate when not connected to the exhust and does it need to be relearned somehow?