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NPP won’t work?
Just swapped my Corsa Extreme+ system for the Corsa NPP axelback to quiet the car down a bit after mods but the valves are just staying wide open they don’t respond to any mode selection. Has anyone had this happen before by chance when going back to a NPP exhaust?
I’ve asked the tuner, they claim it’s not shut off or tuned out. I don’t have a unlocked MVPI tool, is it accessible without unlocking again does anyone know? I’ve checked the fuses and the wires are all plugged in but the motors never spin, even tried another set of actuators.
PFA
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