Originally Posted by
eXo3901
You wont scale it. MAP sensor data, like injector data, does not change unless the physical part changes. You install the physical sensor then open your tune file and input the specific linear and offset data that matches the sensor, then flash the tune. Done correctly, nothing would change below ~103kPa. KOEO BARO/MAP should read right around ~100kPa(just like it does now), depending on your location. Above ~103kPa you will need to re-tune the VVE/VE table, since your stock sensor never reported anything over ~103kPa. Search around on this forum for the common 2 or 3 bar sensors most people use, most are genuine GM sensors from different GM applications. Usually someone will post a sensor part number and correct sensor data. Do not buy a holley 2/3 bar and expect it to work correctly.