How accurate is the boost display on the power fc/ commander with the apexi 3 bar sensor?

 

Should be in the PFC forum.

The scale and offsets in the PFC are not accurate. This causes the PFC boost readings to show higher than reality. This applies to all of the options.

Here are my values that I got from calibrating at 67 FT altitude in Houston.

CALIBRATED direct plug in APEXI DENSO DPS-310-2000A (949940-6270 5 volt) 3 bar map sensor: 45200/3300 for FD3S or 6780/3300 for Universal.
Same as Apexi 499-X001 3Bar MAP Sensor.

 

Any idea approximately how far off the PFC reads with a GM (or other) 3-bar sensor as compared to a good mechanical boost gauge?

I noticed it to read lower even with the stock map sensor, but that might have been my gauge.

P

 

I actually prefer the apexi sensor, but I don't use any of the pre-programmed settings.

 

My Autometer boost gauge was off about .5psi at 18psi.