Quote:
Originally Posted by 123Gone
It's possible that the computer's algorhythms can't compensate for the increased air flow.
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Quote:
Originally Posted by 123Gone
I think so. Corvette owners ran into this problem. Algorhythms must be modified via LS1 Edit software in order to get proper air/fuel ratios across the band.
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The algorithms used by the ECU are more than capable of producing correct air:fuel ratio, even with engine modifications. Mass air flow sensors are used for very good reason in EFI engines. If the intake and exhaust are modified to allow more air flow, that extra mass of air has to be pulled through the MAF sensor, so it is measured and accounted for in fueling. What it is in need of is a simple tweak to a scalar to get WOT fueling correct. In low to medium load, in closed loop, the ECU could make a correction probably about 20% in either direction, but at WOT it is likely that it makes small trim corrections if any. Extra airflow is still measured and fueled, but the factory commanded AFR is pretty rich to keep things safe.