Postby ZeroOne » October 8th, 2020, 7:48 pm
Its all ECU controlled. Cant really go beyond the ECU parameters.
Pull out a proper scan tool and check the following:
idle for the 4g15 gdi is ~650rpm
mpa on fuel rail should be 5
also check long term and short term fuel trims, >10 in any one = something wrong
error codes can point you in the right direction as well