x22) Get past the "self-learn" marketing hype. They all will do this but beware - you have to have a system up, running and a pretty good tune before the self-learn kicks in. Self-learn only affects the fuel table based on your driving and how it matches the preset Fuel Ratio table. It has to have a good place to start or it won't 'self-learn'. Self-Learn also won't do cold start, hot start, fuel economy, de-accel popping, timing. You or your tuner have to set all these before the self-learn get to be useful.