vafc + pr3 + 440cc injectors ?? tuning it
07-18-2003, 11:41 AM
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vafc + pr3 + 440cc injectors ?? tuning it
recently installed vafc in 90 teg. running B16A swap w/ 440cc injectors. Not quite sure my wiring is correct, motor is severely flooding even at -50%. Injectors came from excelent running car. Severly frustrated 
07-18-2003, 12:58 PM
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Re: vafc + pr3 + 440cc injectors ?? tuning it (MinorObsession)
are you running a PR3?
That ECU uses 2 O2 sensors, each one controls the fuel trim to a
'pair' of cylinders. So unless you have the ORIGNIAL or 4-2-1 header
with 2 o2's, One in each of the '2' part of the the 4-2-1 header,
You gotta run open-loop, unplug the o2 sensor....all of them.
Chances are its not flooding all 4 cylinders, just 2 of them, the other
2 may be lean....
The PR3 is a good ecu. Larger tables than a P28, nice when using a 3-bar MAP,
but 'limited' to 9000 rpm.
Jeffrey Atwood
That ECU uses 2 O2 sensors, each one controls the fuel trim to a
'pair' of cylinders. So unless you have the ORIGNIAL or 4-2-1 header
with 2 o2's, One in each of the '2' part of the the 4-2-1 header,
You gotta run open-loop, unplug the o2 sensor....all of them.
Chances are its not flooding all 4 cylinders, just 2 of them, the other
2 may be lean....
The PR3 is a good ecu. Larger tables than a P28, nice when using a 3-bar MAP,
but 'limited' to 9000 rpm.
Jeffrey Atwood
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