AT4maniac
New member
2019 6.2 platform Sierra.
I just installed the L8P engine with a whipple 3.0
After changing the throttle body to a 2019 from GM. We are still having very high fuel pressure readings and it’s throwing it into reduced power mode. Knowing connections are a little diff. If I change the L8P fuel rail harness to a 6.2 harness will it properly send the correct signal to the ecm. Or will I have to change the injectors as well. We are using HP tuners
I just installed the L8P engine with a whipple 3.0
After changing the throttle body to a 2019 from GM. We are still having very high fuel pressure readings and it’s throwing it into reduced power mode. Knowing connections are a little diff. If I change the L8P fuel rail harness to a 6.2 harness will it properly send the correct signal to the ecm. Or will I have to change the injectors as well. We are using HP tuners
