TPS.CMD Below 100% - Low Boost Pressure
Posted: Fri Aug 04, 2023 3:52 am
Dealership updated my ECU for Oil Life update back in December 2022. I didn't pay close attention on my tune after that & though nothing had changed because I spend most of my driving stuck in bad traffic.
I monitored my tune last month and found TPS.CMD can only reach around 90% even though I have floored accelerator pedal. This lead to inability for turbocharger pressure to hit turbocharger pressure target table. I have changed Final Boost target to 30 PSI and change the Cylinder Fill Limitation much higher than default.
I read a few members in Civic X forum experience this & the solution was KTuner fixed the issue at firmware/software level so I thought I would like to bring this up to your attention and seek your help to fix this problem
I switched back to factory calibration and TPS.CMD showed normal performance. TPS.CMD could go higher than 90% even touched 99%.
I cannot share TunerView log from Factory default and KTuner based calibration drive because the board attachment quota limit has been reached issue.
ECU ID: 37820-5AG-P83. KTuner version: KTuner Software 1.0.12.3.
Below is TunerView screenshot just to show that Factory default calibration has no issue with TPS.CMD.
I monitored my tune last month and found TPS.CMD can only reach around 90% even though I have floored accelerator pedal. This lead to inability for turbocharger pressure to hit turbocharger pressure target table. I have changed Final Boost target to 30 PSI and change the Cylinder Fill Limitation much higher than default.
I read a few members in Civic X forum experience this & the solution was KTuner fixed the issue at firmware/software level so I thought I would like to bring this up to your attention and seek your help to fix this problem
I switched back to factory calibration and TPS.CMD showed normal performance. TPS.CMD could go higher than 90% even touched 99%.
I cannot share TunerView log from Factory default and KTuner based calibration drive because the board attachment quota limit has been reached issue.
ECU ID: 37820-5AG-P83. KTuner version: KTuner Software 1.0.12.3.
Below is TunerView screenshot just to show that Factory default calibration has no issue with TPS.CMD.