I have been playing with the idea of tuning my pcm in the spring, but the question is, should i just get a tuned pcm from overkill or purchase this tuner, to my understanding (which may be wrong) you can adjust the fuel economy, and HP, so does this mean for say im going to drive for three hours i can just plug this in and say i want 32mpg? and then get home and move the HP back up, because i dont want me mpg to go down so im contemplating with the idea, any suggestions or inputs let me know, thanks
