Fails miserably as an only tuning device. I simply cannot stand this thing. Every time I start my car I find myself adjusting this thing to get my car to idle/run right(which it still doesn't by the way). I'm running 550s with a 255 pump and AFPR on a ported 14b. I somewhat got it running decent on WOT but my mid throttle is simply horrible. One minute i'm running lean so I tune to compensate then 20 minutes later its running lean again because of the slightest temperature change. I've heard their bad when it comes to temperature changes, but I didn't imagine it would be THIS bad. Should of saved up and shelled out the cash for V3 instead of buying this thing.
/End rant