Originally Posted by
timg
I replaced the injectors with the Bosch 56# ones I had trouble with before. This time, I used the L92 fuel rail rather than the LS2 fuel rail. They fit much better. Both o-rings are fully seated. I also redid some of the injector data with the data from the LS9/LSA. It started and ran, but was 5-6% too rich. I compared Greg's injector data with the LS9 injector data and guess what, the G302 (0280 158 117) injectors flowed ~ 5-7% more within that range of the IFR table. I put the injector data in from Greg's spreadsheet and now the tune was spot on.
So, one or a combination of things may have happened.
My intake was really throwing off the tune and I never noticed before (Doubtful, but possible. The old logs I have do not show this, but I hadn't checked recently.)
The 2.5 bar MAP sensor really screwed things up in the OS.
I mixed up some of the injector offset data in HPTuners (initially changing Offset vs Volts vs MAP instead of Offset vs Press vs IGNV)
When I removed the injectors initially, one was missing an o-ring. Possibly, it was missing the whole time...
Anyway, I will keep putting other modifications back on to see if it really was the intake or the MAP sensor. If not, the most likely conclusion is that my mistakes in the offset data really messed up the tune.
Tim