Gm 2 Bar Map Sensor Voltage Chart

All the diablo tunes i am aware of right now are using a 2 bar map sensor in place of the factory 1 bar sensor.

Gm 2 bar map sensor voltage chart.

Chevrolet performance map sensors are high quality direct fit replacements for worn or malfunctioning map manifold absolute pressure sensors. The map sensor manifold absolute pressure has a 5 volt input and then reduces this voltage according to throttle opening altitude etc and sends the signal to the ecu. If you are going to run more than about about 15 psi max then you will need a 2 5 or 3 bar sensor but the tune will have to be scaled for it. Nearly everyone is using the gm map sensors they are linear in output and readily available.

886 012 539 609 701 3 bar. 039 460 883 876 2 bar. Gm map sensor identification how to identify a gm map sensor. The pressure inside the intake manifold is an extremely important input to the ecu.

This sensor will respond to changes in manifold pressures and relay the information to the ecu in the form of a voltage signal ranging from about 1 volt to 5 volts. 3 digit numbers for identification. So by supplying a higher or lower voltage the return signal is varied by the same amount. Now at a slightly higher elevation reading flickers between 1 78 and 1 79v giving a reading of 0 9 psig engine load with the car off.

Several different versions are available for normally aspirated and engines with blowers. Linear output based in this info chart shown is for a 2 bar scaling to 29 4 psi. Find chevrolet performance map sensors 12592525 and get free shipping on orders over 99 at summit racing. Apparently it s a gm cheverolet performance 3 bar sensor which should have an approx.

It is possible that detroit is slightly above sea level and you can use 12 11 in the formula for 1 mile above sea level. 2240 0 1600 psi 2247 2 bar map sensor map voltage map output voltage offset voltage. Stainless pressure sensor caliper use a ss pressure sensor where you need exact details of the pressure. Map sensor information for the ecu calibration crucial information for the ecu.

Formula for the gm 3 bar map sensor is v 8 94 14 53 i have no idea why it s 14 53 and not 14 696 rounds up to 14 7 but it works out on gm s chart every time. These sensors accurately produce voltage or frequency as intake manifold pressure changes and the computer uses this information to measure. Brass pressure sensor used for a boost gauge reference information for knowing manifold pressure not for ecu calibration.