Chasing some info on MAP sensors. I seem to have an issue with what feels like boost cut above 1.1 kgcm2 on the FC Commander.
I first started having these issues at the plex doing the Rally Sprint. First I thought the car was over-boosting (which technically it was), then I thought there was a ignition problem (which I still believe to be true). I have changed over to the later model black coil over plug and completed the necessary wiring changes. The car runs fine now up to 1.1 is bar, then pop pop bang.... goes the exhaust & loss of power if I go over this set point.
My fuelling is all good & I do have room in the injectors up top (running at 88% now at 1.05 kgcm2 @ 10.8 - 11.2 AFR & 22 knock at full noise) I think everything else is good in the tune, albeit still a little rich, but that's OK by me.
So I have started to do some reading & have come to the conclusion that the early model WRX's MAP sensor can only read up to approximately 1.2 bar. I have read that the later 98-99 models can go up to 1.5 ish bar, is this correct?
Could anyone confirm if this is correct & if so the part number for the later model MAP sensor & or solenoid. Also is this just a direct plug & play & run a bit more boost, or does the boost settings need to be re scaled due to the higher reading MAP?
Sorry if this is not worded quite right, but I'm just learning
