Quote:
Originally Posted by Harlan
The Vacuum Leak is causing it to run lean because I reprogrammed the engine and forced it into open loop. I'm using the stock WB 02 sensor for both AFR and EGT. The stock NB sensor is disconnected because it would not let me lean burn the engine.
I can reprogram the engine for lean burn in closed loop, however that is limited by the range of the WB 02 (about 20:1 AFR) and I can't currently change the AFR on the fly.
I think it will have drastically different results when cruising under load.
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Under load is where it gets real. I don't even bother with lean burn tuning at a idle.