what does this REAllY do.... i can read the details but what will it really do for me if i already have a diablo sport chip. G-Tech Meter

 

dude it says everthing it does on the link you gave us

 

I have one and it's pretty damn on the Money. I cant run my car at the strip any more because i need a cage,battery in teh truck, different wheel studs, driveshaft loop and i think a few more. So i use this now. it's with in 100th of a sec. very cool item to track your car's power/speed and many more things. And you can hook it up to your PC

 

It requires a straight & flat road to get anything close to an accurate 1/4 mile rating. It's fun to play with, it can give you a general idea..but I wouldn't tell anyone about it