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Anyone having an issue getting it calibrated? I can do the portrait calibration successfully, and it advances to the landscape calibration, but I never get past that.

I sat it on a table to keep it real still. I couldn't get passed the first one till I realized that. Other than that no problems.
 
Highway Truck scales...

I just used the curb GVWR weight listed on the door of 6600lbs...

Maximum Gross Vehicle Weight Rating 6,600 lbs. vs. Curb Weight 4,671 lbs.

We have a truck scale along side Hwy 9 near Lake Stevens, WA.

Most of the time it is un-maned and the scale is turned around to the window so anyone can drive up and get an accurate weight.

I'll try it today and see how the numbers change.

I still don't know what number to enter for "Drivetrain Loss"?

"Enter estimated drivetrain loss for use in horsepower calculations. Typical values are 15-25. Enter 0 to report wheel hp."

I used 25% on the first test. I'll have to try it at 0% and see what I get.

Where would you find an accurate #% for drivetrain loss?
 
The weight rating in the door jamb is, I believe, the GVWR - Gross Vehicle Weight Rating. It's the rating of the MAX weight the vehicle is designed to handle. So picture yourself, a full tank of gas, and lots of lead weight going for a ride. :) Only rarely will your vehicle actually weigh that much. You're better off using curb weight as reported by magazines or the manufacturer's website, but that's still just an estimation. The only TRUE way to determine your vehicle's weight is to put it on scales each time prior to doing an acceleration run. (The GVWR on my S2000 is only 400 lbs more than the curb weight - it's really not designed for much cargo. :) )

The drivetrain loss percentage thing tries to compensate for the fact that the power your engine produces gets reduced by the time it reaches the road due to friction, transmission oil viscosity, tire flex, etc. There are general rules of thumb (auto vs manual, FWD vs RWD vs AWD) but those numbers have been debated over and over and over and you'll never find anything exact. Just go with 0%, so you'll effectively be measuring power to the wheels, which is what dynos like the DynoJet do.
 
According to the article its suppose to be pretty accurate, but I have a hard time believing that.

Hopefully some people who actually have gone down the 1/4 track with their car will post up on here how the software read and compared over a few runs.

I think it would be a fun little app to have and play with in different friends cars.
 
I sat it on a table to keep it real still. I couldn't get passed the first one till I realized that. Other than that no problems.

I could do that all day and it wouldn't calibrate. App probably needs an update.
 
Err, another thing - there's a full calibration routine available. Plus, each run does a small calibration at the beginning, so you don't have to have it in any particular orientation. Flat, face down, straight up, whatever. (Just in-line with the car, the developer says. Dunno why, I would have guessed they could take readings from all three axes of the accelerometer and figured it out from there...)

hey, where abouts in dallas are you?

i'd like to test my corvette with this app.
 
This app rocks on my 2G Iphone...

I can confirm NO Gps required. Ran 0-60 in 6.71 this morning...not stellar for my car but decent. Shifted slow from 1st to 2nd and that cost me...
 
Update to V1.1 available. I believe this sorts out the occasional crashes people experienced, and also calibration gremlins.
 
Ive just got an iphone 16gb (not 3g), had it jail broken and unlocked to orange, i've just downloaded the dynolicious from the apps store but it wont install!!

Do i need to upgrade my software to 2.0 from 1.1.4 or will this cause problems with the phone as its been jailbroken
 
Ive just got an iphone 16gb (not 3g), had it jail broken and unlocked to orange, i've just downloaded the dynolicious from the apps store but it wont install!!

Do i need to upgrade my software to 2.0 from 1.1.4 or will this cause problems with the phone as its been jailbroken

Yes, you need V2, preferably V2.0.1
The app store won't support any iPhone running an earlier OS.
As for your jailbreak hack, you'll need to ask in the hacks forum perhaps about that.
 
Looks like an update to version 2.0 came today. I haven't tried it yet but the graphics update is very welcome.
 
Looks like an update to version 2.0 came today. I haven't tried it yet but the graphics update is very welcome.

Im glad that unlike so many people, you didn't feel the need to start an entirely new thread for a little update :p

But yes, I got this update also. Interface wasn't bad to start with, but it's certainly a lot nicer now. I can't wait to try it out :cool:
 
I bought the App a year ago or so, but just tried it out today for the first time.

My 2010 Honda Insight (Euro Spec - all extras) did 0-100 km/h in 9.91 and the 1/4 Mile in 17.57 @ 114.7 km/h. Horsepower was rated at 69 kW though I think I did input too less weight.

Honda rates the 0-100 at 12.5 (slower than my time) and HP at 74 kW (higher than my measured HP)

Anyway: The app is nice and I will test it with my fathers S-class as well (Bit faster than my ecobox..).
 
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