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Mazdaspeed 3 owner
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230 Posts
Discussion Starter #1
If it doesn't already exist (I searched the Apple App Store. Not too sure on Android), do you think it would be a good idea to develop an app that does data logging and fabricating a cord that plugs into your car's OBD from your phone? Would that be feasible or practical? And would a large enough crowd of people use it? I know I would. It would be kick ass to have your computer as your smart phone or just to run and see real time diagnostics and adjust A/F ratio. Thoughts, comments, input? If you think it's dumb please let me know. Or if it already exists. Just an idea that came to me in a dream.


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Celest Zoom-Zoom
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4,919 Posts
So like a smartphone tuner. I like the idea. There are apps that run diagnostics. But I don't know of any that can tune a car. I'd be interested in it if it were possible.
 

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Thundercougarfalconbird
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2,450 Posts
they have apps that use the Gmeter in the phone. but no tuning. first i think there needs to be a unlocked ECU no company has come up with one yet so no tuner app. but a data logger maybe possible

[ame]http://www.amazon.com/Diagnostics-Interface-VAG-COM-Cable-Protocols/dp/B007F8TEPW/ref=sr_1_5?s=electronics&ie=UTF8&qid=1352923791&sr=1-5&keywords=usb+to+OBD2[/ame]

for a laptop...now just make the program into an App
 

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K, so to get the obd2 to work it's quite an extensive process unless you want to spend like $200. I have an iPhone 4S and I use DashCommand. In order to be able to do this for about $15 (cost of the Bluetooth OBDII sensor on eBay) you'll need to first JailBreak your iPad. If you have the iPad 3 on 6.0.1 you can't do it yet, but if you have something older, or you haven't updated to iOS 6.0 yet then you're in luck (jailbreak for iOS 6 on A5X chip devices should be available around Christmas).

Okay now, once it's jail broken here are the steps to follow.

1. Go into cydia and add the sources cydia.hackulo.us
apt.modmyi.com

2. Install installous and roqyBT4 and the roqyBT4 Bluetooth OBDII add on (you need this because apple products won't connect to bluetooth OBDII devices, only wifi ones and those are about $150).

3. Get a Bluetooth OBDII from eBay.

4. Download the app DashCommand free from installous ($50 in the app store).

5. Connect your OBDII device to your OBDII port in your car and turn your car to stage 2.

6. Open roqyBT4 and search for your device. When it connects make note of the "data port" numbers that come up when it says it's connected.

7. Now open up DashCommand and go to settings/connection/OBDII data port and enter the numbers you got from roqyBT4.

8. Now it should be connected and you can click "dashboards" in DashCommand and it'll give you all your cars info, diagnose, etc.

Note: Every time you want to use it you'll have to go in to roqyBT4 and re connect to your Bluetooth OBDII. DashCommand will automatically connect to it from now on as long as your phone is connected to it, but your phone won't automatically connect to it. If you don't know how to jailbreak, use YouTube. This app doesn't tune, but it literally shows you everything. You can reset your check engine light, read diagnostics, set your optimal shift points for racing, engine temp, and much much more.


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2012 Mazda 3 GX MT5
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RaceComp app
 
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