At least with my code (BLC1) there is a REAL big difference. I had a problem recently with the chip making my car stall. I contacted Superchips and they replaced it for free, along with reprogramming it for my latest mods for free. I had it since 4/00 and the tech at Superchips made it sound like that was an awful long time to have a Superchip, but anyway, I only had to pay for shipping. In the mean time, I never realized how awful the car shifted without it (ATX). The chip REALLY firms up the shift points, at least with my code. If you can't have a manual like me (my car is an emergency response vehicle and a manual isn't recommended) and have to settle for an ATX, it's WELL worth it. It's pretty cool to watch the needle wrap around to 7,000 rpm in first gear (just don't do that ALL the time or you won't have your 'tour very long!) Good luck with the chip if you do decide to get one.
