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OBDII info question
I'm wondering if there is a stock pid in our trucks that feeds temperature data through the OBD2 port that isn't really necessary for correct operation. If so, can that sensor then be displaced with an EGT probe as a way to get EGT info through the OBD2 port? If you could do this, you could get a $5 dollar app, a $20 wireless OBD2 dongle and read EGT's, all for $25. But I suppose you'd have to get a probe to feed into the repurposed circuit, so maybe another $20. That could pan out to full gauges, code reading, some performance testing and data logging, including EGT (although that app may call the pid "ambient temperature" but its really repurposed for EGT), for $45. Any thoughts?
Can anyone think of any other way to feed EGT data through the OBDII port?
2000 Ford Excursion 7.3, AIS intake, 4" MBRP exhaust, PHP Hydra Chip, Bilsteins (5100 in front and 4600 in back) and x code front springs to be added when I can find the time to put them in.