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.

The basic operation goes like this:

1. Look up a base duty cycle from the Base Duty Cycle table based on gear and engine speed (RPM)
2. Adjust this value by some amount based on how far away current boost is from desired boost

This sounds pretty simple and it really is, but once you start picking about the phrases, you'll see it's a bit more involved than it might seem at first.

A sample screen shot is provided below for reference in the following sections.

The Base Duty Cycle table defines the starting point for the boost control solenoid.

At any given RPM and in any particular gear, the