This is an awesome idea. I always thought iPhones were a huge waste of money, but they seem to be proving their usefulness. Good deal.

I bet there's a way to modify that program to pick up readings from a wii remote's accelerometers and then send those readings via the wii remote's blue tooth to another type of phone for interpretting results... I'm going to talk to my EE/CS buddy about this. Could be a neat project.

 

I bought it last night and took the my B5 A4 out for a spin to see what it would do. I input the weight at 3434 w/ driver (close?) and drivetrain loss I put at 0 to get wheel hp instead of crank my results:

0-60: 7.99 seconds
60': 2.6 @ 25.9mph
1/8 mile: 10.53 @ 67.5 mph
1/4 mile: 16.16 @ 88.8 mph

it calculated 193 whp

 

my iphone wont calibrate so i emailed the developers and im not the only one having problems i guess they are coming out with an update soon that should fix the problems. its cool though i cant drive anyways to test it out

 

And for those who dont have an iphone...Cheap and easy 0-60...I simply mounted a digital camera in my car, played the vid in slow-mo, looking @ the tach & speedo, Comparing the elapsed time of movement(on the speedo) and the needle hitting 60mph.

 

Hrmm... You'd expect a lower whp, as the car is supposed to have 190 chp... and drivetrain loss is like 20%.

 

I bought it, but I botched the run. The car drifted slightly before take-off and it read things all f'ed up. I will report more on my findings when I can get a nice, clear, safe, stretch of decent road to play on.

 

He said he input drive train loss as 0.....this would mean whp is the same as chp since there is no loss in the drive train......

 

This is old... but it says input 0% to get wheel hp... Its accurate if you actually weigh your car... I should be going to a drag stip in a week or so in Muncie I will try it out more while I am there and compare times. Just going cuz I was invited I am not expect to win any races haha.

 

yeah, if someone knows the drive train loss EXACT number, be sure to post it. I've seen 3 different numbers: 23, 25, and 28% ... I have no idea.

 

engine hp is worthless you want to know whp because thats what is getting to the ground