Exhaust, Intake & Control Module on a Dodge Dakota - Air, Spark & Exhaust Photo Gallery
21. The JET module for Dodge applications is a plug-and-play install that intercepts the signal going to the ECM and then sends out its own signal. The ECM reads various parameters such as manifold vacuum, temperature, throttle position, and rpm. By recalibrating the information going into the computer, the JET module is able to tune the engine for better efficiency.