stock gsr with t3/t4 60trim precision 880cc stock fpr walbro 255lph at 12psi the injector duty is already showing 94% at 14psi its showing 120%, the car is not leaning out...How accurate is this or my settings are wrong so its showing the wrong values?
Last edited by boostedeh2 on Fri Jan 09, 2009 4:18 am, edited 2 times in total.
It just doesn't make sense to me that 880cc is already at 94% on 12psi on a stock gsr though...at 14.47psi injector duty is at 122% and a/f is at 11.84.
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It just doesn't make sense to me that 880cc is already at 94% on 12psi on a stock gsr though...at 14.47psi injector duty is at 122% and a/f is at 11.84.
Like I said. I had this also once and it turned out to be a broken FPR. Fuel pressure dived like a stone in free air..
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Just to note since it's relivant: I would say about 75% of the OEM FPR's I have run across have not responded to vacuum; needing replacement. out of these cars, I would say 99% of them had idle and idle/afr issues before but not after replacing the FPR with a brand-new one.
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Its not the duty cycle then, it has to be something with the way injector pulse width is calculated. OR mabey because o differences in impeadances with resistor boxes and what not the injectors arn't really active for the INJ PW that the ecu is commanding.. I don't know, but somthing is not correct..
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