when I got my mega squirt gold box up and running it ran very rich at idle witch was at 1000 rpm. When I started driving it would back fire ,sputter and fart for the first ten miles using the auto tune feature in Tuner studio but then everything smoothed out but I still had to change the fuel table to get idle to 14.7 to 1 ( burning eyes ) the car is very streetable hot or cold. The only issue I have is it does not make the power it should. I am trying to learn how to tune on my own using carborater knowledge. My Hemi swap turned my duster from a high 11 second car to a 14 second car. I may get it dyno tuned before instead of guessing