Damn. That's cheaper than a roller dyno, and you can do it all you want just be driving around your neighborhood. Cool toy to have!MIKESHARDTOP said:Yeah it pulls pretty good, the dyno is from a program used in conjunction with an LS1 edit program as far as I know. He hooks up his laptop into my car and I go out for about a 10 min spin. I drive in all different ranges of rpm's and gears. And during that drive I take it threw the gears about 3 or 4 times. The program records and calculates almost every aspect of the car rpms, speed, tire pressure, air temp, fuel trims, timing, and a bunch of other stuff. It figures out within a 1% range of error what my fwhp, fwtq, rwhp, rwtq. It is more accurate then a dyno from what several people have told me. On a dyno your not calculating in other things like moving air and drag. When I get a chance I’ll take it down to a regular dyno and post the results.. See how accurate they are.