Car bogs at 3200 RPM, airmass calculations jump up
06-01-2013, 02:20 PM
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Car bogs at 3200 RPM, airmass calculations jump up 2005 GTO LS2 6spd E40 EFI Live custom boost OS
The issue I'm having is under moderate throttle conditions (35%) there is a spike in fuel to the engine. In the highlighted section of the log you can see the step at 3200 RPM from one frame to the next. Commanded AFR is still at 14.7, short and long fuel trims are stable through the event. The only DTC is P0103 which is expected as I have the MAF failed at 10Hz for this round of tuning. You can see the MAP, MAF, Throttle position are all stable. In my VE table this is a decending area of the graph, but in reviewing the log there is a large jump up in calculated airmass.
Is there some RPM based protection scaler somewhere that I missed?
The issue I'm having is under moderate throttle conditions (35%) there is a spike in fuel to the engine. In the highlighted section of the log you can see the step at 3200 RPM from one frame to the next. Commanded AFR is still at 14.7, short and long fuel trims are stable through the event. The only DTC is P0103 which is expected as I have the MAF failed at 10Hz for this round of tuning. You can see the MAP, MAF, Throttle position are all stable. In my VE table this is a decending area of the graph, but in reviewing the log there is a large jump up in calculated airmass.
Is there some RPM based protection scaler somewhere that I missed?
