Tbh, I wasn't exactly sure what to expect when I ordered my Lund tune, as this is my first tuned mustang. All I know is, I went from bone stock, to CJ, catless mid pipe and a Lund tune, and the results were drastic. The basic driving characteristics are very mild also. So, I'm not exactly sure what I could possibly nit pick about? On that note, I AM going to data log with Lund, after I put a twin disk clutch in (stock clutch doesn't like CJ rpm's). Just to ensure I'm getting the most out of my set up.