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wang970305 · 05-13-2024, 06:52 PM

Hi guys,

When I had the stock tune, in track mode, when I was cruising, I could just slightly tap the throttle and the valve would open immediately almost. I just recently got an ECm with FBO. Not sure if was the new 95TB, or E85, or the tune might affect the RPM? My npp valves won't open that easily anymore. it wont open till the RPM reaches like 2000-2500RPM somehow. Not sure if anybody else experiences this on their Corsa after the ECM tune? I am currently looking up an NPP fuse bypass kit, or maybe just spending another 200$ to tune the CCM to customize the NPP openning... not sure

05-13-2024, 06:52 PM	#1
wang970305 Drives: 2021 Camaro 2SS Join Date: Oct 2022 Location: HTX Posts: 548 View My Garage	NPP logic changed after an ECM tune? Hi guys, When I had the stock tune, in track mode, when I was cruising, I could just slightly tap the throttle and the valve would open immediately almost. I just recently got an ECm with FBO. Not sure if was the new 95TB, or E85, or the tune might affect the RPM? My npp valves won't open that easily anymore. it wont open till the RPM reaches like 2000-2500RPM somehow. Not sure if anybody else experiences this on their Corsa after the ECM tune? I am currently looking up an NPP fuse bypass kit, or maybe just spending another 200$ to tune the CCM to customize the NPP openning... not sure __________________ 2021 Camaro 2SS Summit White Kooks 1-7/8'' LTH with high flow cats, Corsa Catback Exhaust, Roto-Fab CAI, Ported LT2 IM, LT5 95mm TB, Lethal Garage Flex Fuel Sensor, Mishimoto catch can, AEM Wideband.