I have a myCal from LMS. Let me be very clear that I am happy with LMS. However, I have noticed transmission issues with the stage 4+ tune, which went away after returning to stock. And I did speak with LMS about it and they asked if I wanted them to adjust the tune. But adjusting tunes based on phone conversations/emails is not, IMO, the best way to go about tuning your vehicle. Wether I'm right or wrong, I believe that a dyno tune is the only way to go for reliability. And instead of making the trip to LMS (600 miles r/t for me) possibly multiple times to get my SPECIFIC application dialed in correctly, I'm wondering if going with Unleashed and data logging might be the best route for me. My ?'s are: how exactly does data logging work and how do I go about doing it? Will I need a windows based computer to send/receive tune files? Again, not knocking LMS in any way. I just don't think my car will ever be as good as it potentially could be without multiple dyno runs or data logging. Thanks.