I think I found a reason to finally get the iphone my wife has been wanting...

 

Cool. Thanks.

Some other fun applications of the accelerometer here.

 

1. The Blackberry won't ever have this because they don't have the Accelerometer.

2. This program is worth 10x what they are charging.

3. My best run so far is below. I didn't get a very good start though.







Settings:

Drivetrain Loss: 0% (program says set at 0% for HP at the wheels)
Weight: 2746lbs

For stability, I put it in my armrest with a small towel to hold it steady. Since then I bought a sheet of that grippy stuff they use in tool boxes and lined it to the armrest. Works great.

 

Does the iPhone have to be in any particular position for this App to work? If not, the R56's have a small net holder in the passenger footwell next to the console. I have sometimes put my iPhone in it and it securly holds it in place when it is hooked up.
I have not downloaded the App yet but I am considering it. I just don't want to have to deal with making a special holder for the iPhone to get the App to work properly.

 

I returned my iPhone as there were just too many things it didn't do YET, like true spell checking, cut and paste and turn-by-turn nav, but I have no doubt that they're coming at some point. There are, and will be more, advantages to having the gps antenna have a clear view of the sky. The cupholder may be a little low.

 

See post 74 on the previous page.

It has to be upright, rigidly held in place, and back of the phone facing front, according to that post.

 

Positioning per Dynolicious setup:

 

Ah, thanks, Mike.

The accelerometer has three axes, so based on those instructions, it appears that the software is using readout from two of the axes but not the third.

Edit: ...for acceleration and braking. It must use the third axis for the lateral Gs.

 

Well, I had my Iphone w/ the Dynolicious software in my car today during an autocross event, along with my G-Tech Pro RR.

Over the course of seven runs, the results were remarkably similar. For acceleration and left/right lateral g-forces, the iPhone and G-Tech were within a few hundredths of a 'g'. The only place they differed significantly was the braking forces - the G-Tech was consistently measuring ~ 0.7 g, and the iPhone was always around 0.6 g (about 14% lower than what the G-Tech was reading).

I admit I was impressed at how closely the readings from the two devices matched, but even though the iPhone didn't report the same braking g-forces as the G-Tech, the iPhone readings were still very consistent run-to-run. I would have no problems whatsoever using the iPhone by itself to do before & after comparisons.

At $13 for the Dynolicious software versus $270 for my G-Tech, the iPhone app is a sweet deal. It doesn't do *everything* that the G-Tech does, but at 1/20th the price, I'm still amazed.

 

Cool beans, thanks for the heads up Scott. Now I have a good reason to steal my wife's ipod touch (it also has an accelerometer, right?).

STLMINI, those results are very believable for a stock MCS with street tires.

Oh, and thanks to the OP for doing this very well appreciated public service.

 

I'm not sure what exactly you mean but I should be able to do a lot better if I were in a controlled environment since I have the JCW stage 1.

 

Use a higher weight then that...I highly doubt that your 07 JCW weighs only 2746lbs with a full tank and YOU in it.

For me, I plan to use 2860lbs. 05 MCS is said to weigh ~2680, a guy earlier in this thread with the same options as me said his weighed 2653 with 1/4 tank of gas. Gasoline is 6lbs per gallon. So I added 11 gallons or 66lbs to that to get 2719, rounded to 2720, used my weight of 140 so 2860 is the total.

This will give you a HIGHER and more accurate HP since the car is pushing more weight. When I dl this app I'm also going to use 0% whp is more comparable to dynos.

 

I'll change it to 2888.

2634 + 220 (me) + 66 (gas) - 32 (weight savings from wheels/tires) = 2888

 

yea, it wont change anything related to timing, but it will make HP more accurate. And as for 66lbs I used that because the other guy measured his R53 with 1/4 tank. The R53 holds 14.5 gal so 1/4 tank would be ~ 3.5-4 left. I have no idea the size of the tank in an R56.

edit* my guess is that 2890lbs will bump your shown hp to 153-155whp still seems awfully low for a new JCW considering non JCW R53s put down those numbers?

 

Here is what I did for my iPhone 3G. It can be oriented properly for Dynolicious, and connected to the AUX (and USB if you have one). I posted a DIY thread in the 2nd Gen Nav/Audio forum, and a few people asked me to make a few for sale. If you are handy with plex, they aren't hard to make. I've also made a few out of hardwods. See my vendor announcement.

I have not had a chance to do a serious acceleration run with Dynolicious, but have done a few steet starts not at WOT. Seems I only used 95 hp.

 

I have not downloaded this software as of yet but I will very soon. I have been putting my 3G phone with silicone skin in the cupholder and it doesn't move at all (I have to force it in) and will try this when I install the dyno software. BTW there is alot of software on the way for the Iphone 3G but I have heard no news about a movie player (downloaded Italian Job and would like to view it on my iphone) anyone heard anything out there?

 

Get quicktime Pro. Convert movie to M4V. Copy into iPhone.

 

Cool thanks...BTW how do you install quicktime into the Iphone? (is it through itunes. How does one convert the movie to that format?

Sorry bout the thread jack just a few quick ?'s is all.

 

A light version of quicktime is sort of already in your iPhone. You want to download quicktime pro onto your computer. Open your movie file. Export it as "for iPod" M4V. Then go into iTunes and add the new exported file into your iTunes library. Attach your iPhone to your computer. Click on the movies tab. Select your movie from the list and give it a check mark. Sync iPhone. Go into iPod on iPhone and into videos section. Play movie.

 

No need to install quicktime; it should play through iTunes.

 

Used dynolicious on the Dragon last weekend... pulled 1.10G left and right, and 1.05G braking... (thanks to camber plates, Nitto Neo Gens, Carbotech AX6 pads, Koni FSDs, M7 USS, 19mm rear swaybar)

 

I had the movie loaded onto the phone but it would not play it. (downloaded movie from istore)

 

Sounds like you had a lot of fun, Blimey!

 

Big, big, big fun. Times a zillion. Best trip yet.

 

I will be installing this app today and I'm taking it for a trip down the Devils Hwy in Eastern AZ on Sunday!!!