I just put in a chip from Reinhart Automotive. Haven't had a chance at the dyno yet, but my rev limiter is raised and my speed limit is raised. I have an auto and the shifts are very crisp. It also incorporates my 24# injectors and my 80mm Lightning MAF. Only problem so far is a little hesitation at very light throttle settings. Idle is stable and a little higher. Maybe 800-850 rpm. After the dyno plots they will reburn to correct any a/f problems and any thing else that shows up in the plot. So far, so good.