After swapping to a BB throttle body and 16197427 ECM, I have been having a hard time getting a consistent idle in closed loop. In open loop, it seems to run really smooth, but once it goes closed, the idle gets really unstable. The RPM stumbles along with a drop in integrator value. Once the value gets to 124 stall saver kicks in, it revs up, then starts over again. I was watching the live BPW value, and it was getting to the min allowable value so I lowered that a little bit. I attached my current BIN and a log of the stumbling idle.
I had it running somewhat reasonably with the SB throttle body, same injectors/FP, and a 1228747 ECM. Do I need to go back to the SB throttle body or less flow injector/higher FP in the BB throttle body? Shouldn't the BLM adjust when the integrator gets that low to adjust C/L idle fueling? I'm stumped...
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