I did it on my iphone twice... first time it said my peak hp was 154 second time it said 157... so im guessing its pretty much closeeeee to being accurate!?

its pretty sweet! especially the skid pad feature on it!

 

I have it on my I-Phone for $12.99 you can't go wrong. Seems to be close to where it should be. Ran a couple of runs in it so far.

13.94 1/4 at 101mph
13.73 1/4 at 103mph
13.85 1/4 at 101mph

All runs were just let off brake and punch. If anything at least it is fun to play with... I put the weight of the car at 3615, but not sure how accurate that weight is. It put HP at 280.

 

Garbage! I hope its just the FL weather getting the best of me. Weight is at 3687 lbs, drivetrain loss 15%.

 

Just bought it. Going to try it out. It looks very promising and lots of people are saying that their numbers are accurate...

 

I just bought it, it requires entering the car's weight in lbs and drivetrain loss. what are these values on an IS250?