Fuel pressure too high

[mJolnir]

So its a 2016 camaro SS, it has a tsp cam with the 32% fuel lobe, drop in forged pistons with stock compression, LT4 injectors and HPFP an the stock in tank pump.

The car is down on power, it only made 476whp on e85, thats only 10whp more than the stock cam numbers, so i took the car on the road and did a pull, the car went on REP, the code was for the fuel pressure sensor being too high, and on the datalog rail pressure gets pinned at 3700psi, so im guessing im way over what the injectors can manage and that keeps them shut.

I copied the injector data from a z06 and the pump, maybe i overlooked something on the tune?
Is commanding lower low side pressure the only way to manage the pressure on the high side?

misscircum2.hpl
lt4 inj dyno4 e85.hpt

[tunerpro]

If you don't have some sort of mechanical issue, then you will need to adjust the regulator angle table to compensate for the fuel lobe.

[mJolnir]

So i fixed the leading and trailing edge axis, also went back to the stock lpfp settings, it took longer to do it, but still fuel pressure spiked to 3700psi and shut the injectors
lt4 inj dyno5 e85 test 2.hpt
tooohighfuel press1.hpl

[TriPinTaZ]

Have you tried changing your fuel pressure sensor offset & gain values? What happens when you use LT4 settings vs LT1 settings?

[mJolnir]

Have you tried changing your fuel pressure sensor offset & gain values? What happens when you use LT4 settings vs LT1 settings?

i havent tried, i could test it later this week

[mJolnir]

Ended up fixing it by comanding 55 psi on the low side fuel pressure