Sensor Scaling

While these serve no performance function at this time, this was the best solution I could come up with for logging after market 5V sensors thru the stock ECU. If you guys like these, I’ll add more 5V scaling inputs thru secondary O2s (say you wanted to log fuel pressure or oil pressure).

Right now, this is setup to log any MAP sensor thru pin 92 and any wideband thru pin 93. All you need to wire is the sensors 5V output signals into these pins, then scale them according to the manufacturer settings.


After you have this setup, then all you need to do to log them is select MAP and wideband Scaled in EVOScan. If you have your scaling setup correctly, the values will be accurate. You should be able to find the scalings for any/all sensors thru google.

For example, this is the scaling for the EVOX map sensor.


****I do not have a list of every sensor and their scalings however in the future I may compile a list for you guys. For now, you’ll have to do a little searching.

Discussion Here: Disassembly: Manifold Pressure Differential Sensor

This page was posted on Wednesday, April 17th, 2013 at 12:38 am by bfarnam and last modified on Friday, April 19th, 2013 at 11:36 pm by bfarnam