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Qwimby1 · 01-09-2024, 12:23 PM

I'm running the Phantom electric supercharger on my 14 FRS, so I commonly have the OBD absolute throttle position reading showing. It recently went from standard 100% when floored, to 80.1 max. I can't figure out what caused that. I was concerned about mixture being too lean but it's 11 point something so I'm not concerned about that now. I don't know if the culprit could be the TPS or the throttle body itself. I talked to the guys that make my OBD reader and they said that it's telling me exactly what the ECU is telling it. Throttle body is clean and the butterfly opens wide. I'm not sure where to look next. I can pick up a lightly-used throttle body to try. I have a little more complication since I have a fused neck and can't turn my head much so I really can't work on the floor under the dash. I don't think I could change the TPS myself.

01-09-2024, 12:23 PM	#1
Qwimby1 Senior Member Join Date: Nov 2015 Drives: 14 FRS Monogram, 05 Mazdasped Miata Location: Sarasota, FL Posts: 571 Thanks: 133 Thanked 144 Times in 106 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Throttle position reading I'm running the Phantom electric supercharger on my 14 FRS, so I commonly have the OBD absolute throttle position reading showing. It recently went from standard 100% when floored, to 80.1 max. I can't figure out what caused that. I was concerned about mixture being too lean but it's 11 point something so I'm not concerned about that now. I don't know if the culprit could be the TPS or the throttle body itself. I talked to the guys that make my OBD reader and they said that it's telling me exactly what the ECU is telling it. Throttle body is clean and the butterfly opens wide. I'm not sure where to look next. I can pick up a lightly-used throttle body to try. I have a little more complication since I have a fused neck and can't turn my head much so I really can't work on the floor under the dash. I don't think I could change the TPS myself.