So after having this unit, I still like the results overall. I now have more fun driving the vehicle, meaning I can baby it and make it a monster by pressing one button. One thing I noticed is that it works better if you turn off the stability control, on the negative side I went from 21 mpg to 16 mpg and it's because now I drive it as I stole it, maybe doing the muffler delete has something to do with it but, really I feel that I have another vehicle since I bought the Booster...