Gm 2 Bar Map Sensor Voltage Chart

886 012 539 609 701 3 bar.

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. So by supplying a higher or lower voltage the return signal is varied by the same amount. These sensors accurately produce voltage or frequency as intake manifold pressure changes and the computer uses this information to measure. 039 460 883 876 2 bar.

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. The pressure inside the intake manifold is an extremely important input to the ecu. Apparently it s a gm cheverolet performance 3 bar sensor which should have an approx. Nearly everyone is using the gm map sensors they are linear in output and readily available.

Linear output based in this info chart shown is for a 2 bar scaling to 29 4 psi. Brass pressure sensor used for a boost gauge reference information for knowing manifold pressure not for ecu calibration. Stainless pressure sensor caliper use a ss pressure sensor where you need exact details of the pressure. 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.

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. Gm map sensor identification how to identify a gm map sensor. 3 digit numbers for identification. 2240 0 1600 psi 2247 2 bar map sensor map voltage map output voltage offset voltage.

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. 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. 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. The part is ac delco 12592525.

Several different versions are available for normally aspirated and engines with blowers. Applications up to 30 lbs. Map sensor information for the ecu calibration crucial information for the ecu.