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05-13-2024, 06:52 PM
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#1 |
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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
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2021 Camaro 2SS Summit White
Kooks 1-7/8 LTH with high flow cats, Corsa Extreme+ variable, Roto-Fab CAI, GPI Ported-LT2 IM, LT5 95mmTB, Lethal Garage Flex Fuel Sensor, Mishimoto catch can. |
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05-14-2024, 07:16 AM
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#2 |
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Snackbar Tuning
Drives: 2023 SGM ZL1 Join Date: Oct 2016
Location: Florida
Posts: 1,157
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The tuner would have had to intentionally license and tune the CCM (Chassis control module) to change how the NPP works. Just tuning the ECU won't have any effect on how the NPP works.
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GM Gen V Calibrator
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05-14-2024, 02:46 PM
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#3 | |
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Quote:
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2021 Camaro 2SS Summit White
Kooks 1-7/8 LTH with high flow cats, Corsa Extreme+ variable, Roto-Fab CAI, GPI Ported-LT2 IM, LT5 95mmTB, Lethal Garage Flex Fuel Sensor, Mishimoto catch can. |
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05-15-2024, 10:44 AM
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#4 |
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Petro-sexual
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OPEN all the time I believe
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 '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs |
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05-15-2024, 08:25 PM
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#5 |
 Drives: 6th Gen LT1 Join Date: Jun 2023
Location: Southeast
Posts: 269
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Ask the tuner. To me the engine pushes more at low rpm with the valves closed.
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05-16-2024, 11:49 AM
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#6 |
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I did work with the tuner and I’m pretty sure there is no way my a1 tuner would pay for the credits himself to tune CMM just to fk with me������
However we did have some issue with my TB, so I put the OEM one back on and looks like valves are kinda like how they were before… maybe it was the RPM or the TB playing the trick
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2021 Camaro 2SS Summit White
Kooks 1-7/8 LTH with high flow cats, Corsa Extreme+ variable, Roto-Fab CAI, GPI Ported-LT2 IM, LT5 95mmTB, Lethal Garage Flex Fuel Sensor, Mishimoto catch can. |
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