I'm running a stock crate LS3, stock injectors etc, FPCM not installed/disabled. (601: FPCM Fitted: No).
Therefore I am assuming the E38 would otherwise be expecting a default 58 psi at the fuel injector rail.
However I am using a ZL1 pump assembly which puts out 65 psi (448kpa) hard wired to 12 volts so I am assuming it will be putting out full capacity at all times at the rated 65psi via the regulator built into the drop-in pump assembly.
I seem to be running rich, so I am assuming the ECU is expecting 58psi at the rail but as it is actually getting 65psi it is likely dumping a good 10% too much fuel in at any point and also for any adjustments/calculations it is trying to perform to self-correct the problem.
So I have now changed:
Engine, General
Injector Control, Rail Pressure
13541: Rail Pressure Min to 448kPa
13542: Rail Pressure Max to 448kPa
Fuel System, Fuel Pressure
Desired Fuel Pressure
7033: Normal to 448kPa
7030: High Flow to 448kPa
7031: Low Flow to 448kPa
7032: Cold Engine to 448kPa
7034: Default to 448kPa
7035: Fail to 448kPa
Are these the only fields I need to change? I would assume I don't need to change 12307 Injector Flow Rate Vs Pressure Delta as I am using the stock 42Lbs injectors. I have seen some users shifting this table to the left three cells to help solve this same problem. I have not attempted this potential fix yet though, because my thinking tells me that this table/curve should be left alone and elsewhere it should be told 65psi is incoming.
With the FPCM disabled, does the E38 default to expecting 58psi at the rail no matter what I change? Or have I in fact made the right changes (as shown above) to have it believe it is receiving 65psi?
Note I'm only just doing the startup tunes at the moment. Has been going ok so far. It could very easily be something else in my tune creating the rich result.
Thanks,
Matt