must have app for i phone users

turns iphone into a dyno a la gtech pro!!!!

cool and only 13 bucks!!!!

this app is terrible - i did a perfect run - it told me i had 1056 horse power and my 0-60 time was 7.68 seconds!!! this does not work!!!!

need to "mount" it properly..

either flat pointing straight or vert poining straight

i got a 6 sec 0-60 without a hard launch... which netted 250hp at the wheels...

just did it once... and guessed at weight and other "setup" info