I was looking for a used gtech to play with and ended up buying a new iPhone. I didn't really lust after one before I found out about the dyno app. for it, but after I couldn't help myself.

I saw a youtube video that compares chassis dyno results to some runs at englishtown dragstrip using the track timer, gtech meter, and iPhone application. I was surprised to see the iPhone coming out ahead of the gtech.

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

I'll try it out on my junk this week and post results.

rdr

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madam im adam

yup soon as i saw it online i had to have it. used it only a couple of times,but seems to be pretty accurate. ive yet to use it on my own car.

It was the first app I bought for my iPhone, and yet, I've never used it. It needs a rock-solid mounting location, which I've never gotten around to creating...

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vm

What'd your junk do?

that app is the sole reason i want an ipod touch

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What's that fuzzy blue thing being hurled this way?
::stick::
BOOSH!!!

But I tried it out some in my /6 swinger. I got a 15.3 1/8mi at 45mph. Based on a guessed weight 3700lbs it reported 50hp at the wheels.


I know she's got more than that in her- gotta be pushing at least 70hp!

Anybody else get#s?

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madam im adam

The G-Tech is within a tenth of my track results...

Do you need the iPhone in a specific orientation to be accurate? Vertical, level, or whatever?

The G-Tech has to be zero'd and level to be accurate. It has to do with how the internal accelerometer is oriented.

CJ

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Part of Tyrde-Browne Racing

The iPhone also has to be firmly mounted and aligned with the medial axis of the vehicle, but it can be tilted at any angle. There is a calibration procedure that you do with Dynolicious when you first set it up on the phone.