I'm completely happy with the MegaSquirt3X setup I'm running on mine. The built in features like fan control, launch control, rev-limiter and self-tuning for the most part is huge for me. The user's forum is invaluable when it comes to figuring stuff out - even if the documentation is well done - it's really nice to be able to bounce ideas off of other people who are running the same thing. I data log every pass to see where and what I want to change - as well as let it auto tune itself. It will tune itself using the wideband you already have installed.