Quote:
Originally Posted by twj347
You really want to know the relationship between IAT and intake temperature in your ECU before doing this. My car has IAT vs Ignition Timing tables in the ECU, but the OEM tables only retard timing above intake temps of 40C. At all temperatures below 40C, there is no adjustment. This means that unless its really hot outside, fudging the IAT sensor calibration is not going to do anything but possibly mess with your AFRs.
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Ideally I'd like to do some data logging before doing any mod, since I can't access or adjust the timing tables in the PCM due to lack of support... Basically I thought of IAT as a workaround method of advancing the timing some more, which would help both power/torque and mileage at constant speed..