ECMTuning - wiki

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<h1>ECU-based Boost Control Overview</h1> <div class="level1"> <p> ECMLink's boost control mechanism is modeled after the factory implementation provided on 1995+ DSMs and Lancer EVOs. The most notable difference being that ECMLink's implementation provides gear-based control rather than a single curve that applies all the time. </p> <p> The basic operation goes like this: </p> <ol> <li class="level1"> Look up a base duty cycle from the Base Duty Cycle table based on gear and engine speed (RPM)</li> <li class="level2"> Adjust this value by some amount based on how far away current boost is from desired boost</li> </ol> <p> This sounds pretty simple and it really is, but once you start picking about the phrases, you'll see there's a bit more involved than it might seem at first. </p> </div>