Boost Pressure

[submitaweasel]

Out of curiosity, I plugged in an OBDII reader I had to see what boost pressure the engine made after reading from other users, it was lower than the advertised maximum.

The reader reads the MAP sensor value. I saw a maximum of 7psi at partial throttle and 5psi at WOT in 2nd and 3rd gear in both "normal" and "sport." I verified the map value with the reader as the absolute value (uncorrected) never went past 20PSI at WOT.

I contacted the reader manufacturer (never had an issue in the past; had a mini Cooper s that ran 17psi that read correct on the same device verified by a mechanical gauge) and they stated it is simply reading the map signal.

Am I missing something? Or has my new integra had a boost leak since purchase that my butt dyno somehow missed?

 

[KTuner]

These vehicles are torque limited, airflow limited, and vary several things, including boost levels, based on your fuel quality along with your environmental factors.

 

[submitaweasel]

Thanks for the response, KTuner. Makes sense how tunes can raise torque +20% with marginally increasing peak boost.