Gm 2 Bar Map Sensor Voltage Chart

Apparently it s a gm cheverolet performance 3 bar sensor which should have an approx.

Gm 2 bar map sensor voltage chart.

Gm map sensor identification how to identify a gm map sensor. These sensors accurately produce voltage or frequency as intake manifold pressure changes and the computer uses this information to measure. 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. 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.

2240 0 1600 psi 2247 2 bar map sensor map voltage map output voltage offset voltage. Applications up to 30 lbs. 3 digit numbers for identification. 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.

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. 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. The pressure inside the intake manifold is an extremely important input to the ecu.

749 861 the logic module uses the manifold absolute pressure map sensor to determine the absolute pressure not the relative to atmospheric pressure of the air inside the intake manifold and the atmosphere barometric pressure. 886 012 539 609 701 3 bar. Map sensor information for the ecu calibration crucial information for the ecu. So by supplying a higher or lower voltage the return signal is varied by the same amount.

Nearly everyone is using the gm map sensors they are linear in output and readily available. The part is ac delco 12592525. Chevrolet performance map sensors are high quality direct fit replacements for worn or malfunctioning map manifold absolute pressure sensors. Several different versions are available for normally aspirated and engines with blowers.

Brass pressure sensor used for a boost gauge reference information for knowing manifold pressure not for ecu calibration. Find chevrolet performance map sensors 12592525 and get free shipping on orders over 99 at summit racing. Stainless pressure sensor caliper use a ss pressure sensor where you need exact details of the pressure.