![]() Changing the translator's ground from ECU sensor ground to chassis ground instead will eliminate this effect. Since both sensors are referenced to the ECU's sensor ground circuit, it's also important that the ECU's sensor ground circuit isn't disrupted by having high-current devices attached to sensor ground.Īs normally installed, MAF translators do get their ground from ECU sensor ground via the Mitsubishi MAF connector and do draw a moderate amount of current, particularly when powering the GM MAF sensor at higher airflow, so expect the pressure and temperature readings to change a little when you unplug the MAF translator. The delayed pressure response will result in poor throttle response and poor control over air/fuel ratio whenever the intake manifold pressure changes. ![]() Long, narrow hoses and tee fittings in the path to the sensor slow the response of the pressure sensor, resulting in poor airflow determination. The MAP sensor should be connected as intimately as practical to the intake manifold. ![]() For the pressure sensor, you can log that on any available (and compatible) input on the ECU.Īccuracy is important, particularly for the pressure readings. When you connect these sensors to your ECU, note that you must connect the GM IAT sensor to the IAT input on the ECU. You can get part number information off the Aftermarket Sensor List page. We also offer a Speed Density bundle on our site as well, which includes the standard 4-bar pressure sensor and the IAT sensor along with necessary pigtails and bung.įor air temperature, the only supported sensor is the GM IAT sensor (AEM IAT sensor is actually the same thing). Other sensors listed on that page can be logged, but are not suitable for SD operation because they do not provide a reliable absolute pressure reading. ![]() These include the GM 3-bar, GM 3.3-bar, AEM 3.5-bar and AEM 5-bar sensors. ![]() Other pressure sensor options are listed on our Aftermarket Sensor List. Pressure and temperature are easy enough to measure in our application using off the shelf sensors like the GM IAT for temperature and the 4-bar sensor we provide on our site for pressure. ![]()
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