I just got my HPP3 shipped UPS from www.thunderracing.com (plug). I have a 2002 Chevy Xtreme 4.3L Automatic trans. Extcab too. I was wondering what setting do any of you change. I set the top speed to 128, as im sure many have,, i used the 93 octane program. I raised the Rev liiter to 5800, and i improved the shift firmness. I was wondering if any of you changed the shift points, and what were they?