Torque, engine power and boost pressure added

A few days ago we launched the updated OBD Auto Doctor software. This time our main focus was in calculated performance parameters such as Engine Torque, Engine Horsepower and Turbo Boost Pressure.

You can now measure the performance of your car by monitoring these new sensors in real time. Read further to get insight into the details.


Torque, Engine Power and Boost Pressure
Engine performance sensors chart from the csv data, saved using Google Sheets


Engine Power or Horsepower

Engine power (or horsepower) can be estimated quite well using vehicle speed and its change over very short period of time. The total weight of the vehicle is also needed for valid results.

OBD Auto Doctor measures the engine power at the wheels. This is not the same as at the flywheel. Therefore, if the vehicle speed doesn’t change, the power will show zero. The horsepower will be greater than zero only when the vehicle is accelerating.

The software will also take power loss due to drag into consideration when calculating the power. An average drag coefficient and vehicle frontal area are used.

You can set the vehicle weight in the app settings. To get the most accurate weight, drive your car to a weightbridge. You could also estimate the total weight by using manufacturer defined weight added with the passenger weight, fuel weight plus any extra weight included in the vehile.

Torque

Torque is calculated from the engine power and RPM. With these two pieces of information, the torque can be estimated quite accurately. Torque is measured at the wheels just like the engine power.

Since torque is using engine power for the calculation, the vehicle weight is a factor in the calculation. Remember to set the correct weight!

Boost Pressure

Boost pressure value yields from the intake manifold absolute pressure. Barometric pressure is also taken into consideration. Now, the vehicle is required to support MAP (manifold absolute pressure) in order for the boost pressure to appear as supported. Barometric pressure is optional. The default pressure value at sea level is used unless the car provides support for the actual barometric pressure.

Negative pressure values represent vacuum. Positive values are boosted by a turbocharger or supercharger.

Other improvements

Among the new calculated performance parameters, we also added more.

The software has now support for all Mode $06 scaling IDs. The latest OBD2 standard version added 12 new identifiers. OBD Auto Doctor implements now all the new IDs in addition to the old ones.

If you are using the desktop software, download the latest version from the download page. The updated mobile apps can be found from the approriate app stores using your phone.



Multiple control units supported in Android, Windows Phone

In the previous app update for Android (version 2.2) and Windows Phone (version 2.0) we added support for multiple control units. The most common and usually the only control unit is the Engine Control Module. However, newer cars are starting to have more than the ECU responding to OBD2 requests. Most cars with automatic transmission have Transmission Control Module (TCM) available for example. There can be also other controllers depending on the manufacturer and model.

Our desktop software has had the support for multiple control units for ages but with the last update we brought the support to the mobile versions too. As with all mobile version updates, this update is completely free for all of our existing customers using the app in these platforms.

Android

In Android, the selection of control unit was added as dropdown spinner in the action bar. The screenshot illustrates a vehicle with three control units available. The selection can be made by opening the spinner by tapping the title and then selecting the appropriate control unit. The selected control unit is visible in every view where it matters and where it can be changed. After changing the control unit, the view data is refreshed from the car and information is shown for the selected controller.


Multiple control units with Android


Get this OBD2 application from Google Play!

Windows Phone

In Windows Phone, the control unit selection was added to the navigation page. The controller can be changed using the list picker on top of the navigation page titled “browse”. To change the control unit, you need to come back to the browse page and do the change you wanted. The screenshot is from the same car as the Android screenshot. The car has three control units and the first one is selected. The acronym of the selected control unit is indicated on top of the view in the title.


Multiple control units with Windows Mobile


Get this OBD2 application from Windows Phone Store!

Update now

Now it’s good time to update your app to the newest version. Remember that as with all the other features, your car needs to support multiple control units for them to show up in the app. If you have only one ECU listed, then your car has only one ECU responding to the OBD2 messages. Happy diagnosing!



Dashboard for WP8 app

An update for OBD Auto Doctor WP8 version was just published few hours ago. The update adds dashboard with some neat gauges to the app. On top of the screen there are speed and RPM meters. At the bottom there are four gauges displaying various information. The gauges may vary a little bit depending on what sensors your car supports. The update is ready for download from Windows Phone Store.


Dashboard on Windows Phone


With the free version, only the speed, RPM and Engine Coolant Temperature are displayed. If you want access to all of the gauges, then upgrade to the Pro version.

In addition to the gauges and meters, the update fixes a disconnect issue with some adapters where the adapter closes the connection after certain idle period.

If you still haven’t tried the app, now it’s good time to try it out!



Great start for the Windows Phone app

The first version of our OBD-II app for Windows Phones was released about 11 weeks ago. We are very pleased that we chose to support Windows Phone 8 ecosystem since we’ve got over 10,000 downloads for the app this far. It’s great to see that there are so many car enthusiasts in the Windows Phone community too!

The app has got very nice welcome among the WP8 users. The feedback for the app has been positive and we highly appreciate it. Here are the top 10 reviews. Thanks for the wonderful feedback, this is what keeps us going!

OBD Auto Doctor Windows Phone reviews: Top 10

  • Wow. A real developer of real and usable apps! Great job. Get the upgrade.
  • Works well. I like that there have been updates with new features. I am using an 8x with BAFX PIC18F2480 Bluetooth device (got it from Amazon).
  • As of version 1.21 the problems with Lumia 920 are fixed. In case of problems just contact to the developers that are really great and respond quickly! Now it works with my Toyota GT86 by iHarbor mini adapter from Amazon on the Lumia 920! Super!
  • Top. Read errors and delete works (Audi, Seat, Honda, …) with a cheap ebay adapter. HTC 8x
  • Good app, prob best obd tool for windows phone
  • Very good and fast
  • Seems to work well with my Lumina 521 and ELM 327. I upgraded to Pro. Looks like the best OBD tool I’ve seen for WP 8.
  • ASE mechanic here…this is a very good price. You’ll save the money in repairs. Knowledge is power.
  • Works perfectly with my 1020 & cheapo BT OBDII adapter on my A4.
  • Excellent app. I bought an OBD2 so I could right this app but there’s no reason to compete. This app is that good.

We will continue to work with the app to bring you improvements and new features. You can leave your feedback or improvement ideas to the comments. We would love to hear from you!

If you still haven’t tried the app, you can get it from Windows Phone Store.



OBD-II diagnostic app for WP8 updated

The OBD-II diagnostic app for Windows Phone 8 has been updated once again. This update contains some neat improvements and additions that you have been requesting. The update is ready for download from Windows Phone Store.

What’s new in version 1.2 of the OBD-II diagnostic app?

  • One of the new features is the possibility to send the diagnostic information via e-mail. This helps you a lot since you don’t have to copy the DTCs by hand anymore. No messages are sent automatically, the message field is just pre-filled with diagnostic info and you get to select the recipients and press the send button. You can share the info with your mechanics or friends easily. Below is sample email produced and sent by the app.
Confirmed Trouble Codes
P0100: Mass or Volume Air Flow “A” Circuit (Powertrain, Generic)
P0200: Injector Circuit/Open (Powertrain, Generic)
P0300: Random/Multiple Cylinder Misfire Detected (Powertrain, Generic)
U0100: Lost Communication With ECM/PCM “A” (Network, Generic)
B0200: ISO/SAE Reserved (Body, Generic)
C0300: ISO/SAE Reserved (Chassis, Generic)

Pending Trouble Codes
P0107: Manifold Absolute Pressure/Barometric Pressure Circuit Low (Powertrain, Generic)
P0207: Injector Circuit/Open – Cylinder 7 (Powertrain, Generic)
P0307: Cylinder 7 Misfire Detected (Powertrain, Generic)

Freeze Frame
P0100: Mass or Volume Air Flow “A” Circuit (Powertrain, Generic)
Engine Coolant Temperature: 40 °C
Engine RPM: 1234 RPM
Vehicle Speed Sensor: 67 km/h

Diagnostic information provided by OBD Auto Doctor
  • Another neat feature is the added support for WiFi adapters. If you have one of those Wi-Fi scantool adapters, you can use OBD Auto Doctor with it now.
  • The third important addition is the troubleshoot module. The troubleshoot module helps you to resolve connectivity issues. It is also possible to send the logs to us for further analysis. If you have any connection issues, you should try this!


Download the OBD-II diagnostic app



Fuel economy for Windows Phones

The first version of our OBD-II app for Windows Phones was released about a month ago. Today, I’m happy to provide you more. The first update for the app, version 1.1, is available from the Windows Phone Store now. The update contains some nice additions such as fuel economy and other smaller improvements.

Fuel Economy

The best part of the update is fuel economy for gas and diesel cars. Most cars don’t report the consumption via OBD as standard parameter. Therefore, the consumption must be calculated from other sensor values. For cars using gas, we base our calculations on MAF air flow rate or intake manifold absolute pressure and intake air temperature. For diesel engines, the fuel economy calculation is based on calculated engine load and MAF air flow rate.


OBD fuel consumption graph
Fuel consumption as sensor graph
OBD fuel economy settings
Fuel consumption settings


The app contains some new settings related to the fuel economy. First of all, the app detects the used fuel type automatically. However, if the consumption value seems to be totally off, you might want to set it manually. The other parameters you might want to check are:

  • fuel correction factor: factor that is used to multiply the calculated economy. Change this only if you think the calculated economy should be fine tuned.
  • volumetric efficiency: For modern cars the VE is about 85%, for older cars it might be little lower such as 75% or 80%. You need to change this only if you know better value than the default.
  • engine displacement: This is the volume of the engine in liters. Change this to reflect your car!

Personalization

Another thing we improved in the app is personalization. Now you can select the avatar image from the gallery too. This is in addition to taking new photo with the camera.

This feature was actually one of the user requests we got from the first version. Please keep sending your improvement ideas and feedback to us. We’ll work hard to make this app the best OBD app for Windows Phones.


OBD app personalization
Personalize the app with your car image


Download the update and start saving fuel, money and nature!


Download from Windows Phone Store



OBD2 app for Windows Phone released

OBD Auto Doctor OBD2 app for Windows Phone is now available from the Microsoft app store!

The app is available for free so that you can make sure it works with your adapter and car. You can read Trouble Codes (confirmed and pending), Freeze Frame and reset MIL with the app. You can also check readiness monitors and monitor various sensor values. And more features will be implemented in future.

The free app contains some limitations, however, that you can unlock by upgrading to the Pro version using in-app purchase. In-app purchase is convenient way to buy the app without need to re-install separate version.


Download from Windows Phone Store

OBDII sensors

Few words about the sensors. First of all, your car needs to support specific sensor in order it to show up in the selection view. If you car doesn’t support a sensor, it will not be shown in the view. The selected sensors will be read one after another. The update speed of the sensors depends much on the used adapter. The better adapter you have, the faster the values are updated. This also means that the more sensors you have selected, the more time it will take to get specific sensor updated. The sensors are updated at maximum speed in the same order they are visible to you.


Numeric OBD2 sensors
Click sensor name to open the graph view
Graphical OBD2 sensors
The graph view


Tapping a sensor name in the view will open graphical presentations of the data. See the screenshots above. Please note that the graph view will be opened only for sensors that have numeric value. If the sensor contains non-numeric value, tapping the name won’t do anything.

Upgrade to the Pro

The upgrade to the Pro version can be done inside the app using in-app purchase. The future updates of the app will be free for all existing customers who have upgraded the the Pro version. The purchase is tied to your Windows Phone account. If you change your phone or uninstall the app by accident, you can always get the Pro version back automatically just by installing the free app from the app store. The only thing you have to do is use the same WP account in your phone.


Upgrade to Pro
The graph view


Unfortunately Microsoft doesn’t provide us any means to issue refunds of the purchases so please test the app with you car before upgrading just to make sure there is no compatibility issues.

Try it now!

The app is available for all Windows Phone 8 devices. Enjoy!


Download from Windows Phone Store

Leave your feedback to the comments or drop us a message!



Windows Phone OBD-II app coming in few weeks

It’s my pleasure to announce that we are about to conquer yet another mobile platform with our OBD app: Windows Phone. We’ve got multiple requests to support Windows Phone ecosystem and the wishes will become reality soon. We have worked hard to come up with the best OBD software for Windows Phone devices. Due to technical limitations the older WP 7.x devices won’t be supported but all WP 8.x devices will.

We are targeting the end of August for the release. The app is quite ready with just some tuning and optimization to be done. The initial version will cover Diagnostic Trouble Codes, Readiness Monitors, Sensors and other information. More features and functionality will be added in upcoming versions.

Check out the screen shots of the coming app. What do you think of them?

By the way, subscribe to our newsletter or follow us on Facebook or Google+ to get notified about the release!


OBD summary on Windows Phone 8
OBDII sensors on WP8


Offline Trouble Code Database for Windows Phone

Detailed DTC Search screenshot

We are proud to present you OBD Trouble Codes app – Offline DTC Database in Your Pocket for Windows Phone 8 devices! The app contains over 14,000 OBD-II Diagnostic Trouble Codes including generic body, chassis, powertrain and network trouble codes. In addition manufacturer specific trouble codes are included too although those are available after in-app upgrade.

In the process of learning the new Windows Phone 8 platform, we decided to get familiar with the ecosystem using new approach. We decided to experiment a little with the platform first. This experiment turned out to be this small yet powerful trouble code search app. As you may have figured out, yes, we are planning to introduce OBD Auto Doctor for Windows Phone 8 in the near future.

If you have Windows Phone 8, please download the app and give us feedback. Based on the feedback and download volumes, we will prioritize the work on our complete diagnostic software OBD Auto Doctor for the platform.

The app can be found from https://www.obdtroublecodes.com. If you have a Windows Phone 8 device, you can download it straight to your phone from


Download OBD Trouble Codes App from Windows Phone Store!

Happy Easter time for all of you.