My friend downloaded a program for the iPhone that measures 0-60, 1/4 mile, and estimates horsepower based on weight and time of acceleration. There's a video on Youtube about it somewhere, and it shows it's fairly accurate. While it's not perfect, it's cheaper than a real dyno run. Here's what my car did (only mod is CAI). 0-60 was something like 8.69, 1/4 was around 16 seconds. Peak HP was 194 (at the engine).

 

thats junk

 

Yea I don't know about this.

 

http://www.youtube.com/watch?v=0-DFbJQbeSY

 

I'll add that it's not like I'm using it for...whatever you use dyno charts for (to measure performance upgrades I suppose). It's just kind of interesting. I used the same program on my old car (93 Corolla) and it peaked at an amazing 65 HP.

 

Yeah, my G-Tech Pro sucked.

~Cheers~