[DerAlte]

Originally Posted by 6zene

If you are using one of those devices that have on/off button, then you should be fine. I have had interesting experiences: one device made weird sounds that I believed it was going to blast, another got burning hot, yet another drained the battery ...

Oh man, you seem to have had more than your share of lemons! Most of the dongles don't have an On-Off switch, as they consume very little power. Which were the dongle (sources) which went bad like what you described? Very bad quality, one must say.

[tharian]

I checked the dongle this morning which had been plugged in since last ten days. It had a very slight warmth to it . Engine cranked fine. Unplugged it nevertheless since the car is hardly used and I can plug it in that once a week.

Can someone provide some info on the Wheel Horse Power that is calculated by the Torque app? It takes the weight of the car into account , but how does it actually calculate it on a small device when big money is spent on a dyno run which of course is accurate.

[6zene]

Originally Posted by DerAlte

Oh man, you seem to have had more than your share of lemons! Most of the dongles don't have an On-Off switch, as they consume very little power. Which were the dongle (sources) which went bad like what you described? Very bad quality, one must say.

One of the mini Elms (blue ones) and other by an Indian start-up (let me not name that!).

[6zene]

Originally Posted by tharian

Can someone provide some info on the Wheel Horse Power that is calculated by the Torque app? It takes the weight of the car into account , but how does it actually calculate it on a small device when big money is spent on a dyno run which of course is accurate.

As far as I understand, WHP is just the guesstimate based on BHP (which too is not very accurate). For most vehicle, they just take 85% (front-wheel) of BHP as WHP - there is a certain amount of power loss during transmission.

Formula I know:
WHP = 0.85 x Weight x (Speed/234)^3

Torque might just be using that!

[sushantr5]

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[Jeroen]

Originally Posted by 6zene

As far as I understand, WHP is just the guesstimate based on BHP (which too is not very accurate). For most vehicle, they just take 85% (front-wheel) of BHP as WHP - there is a certain amount of power loss during transmission.

Formula I know:
WHP = 0.85 x Weight x (Speed/234)^3

Torque might just be using that!

I've no idea why weight would be in that formula. It has no influence. The difference between BHP (which can be measured very accurately) and the WHP (which can also be measured very accurately is transmission/drive train losses.

WHP can be be measured with the car on the dynometer. BHP can be measured with the engine on a test stand.

Here is a simple calculator: http://www.mk5cortinaestate.co.uk/calculator4.php

No weight in there either, only assumptions how much losses occur in the various variants, (e.g. 2WD, 4WD, RW etc)

Jeroen

[aurelino]

I'd like to use OBD on my new polo GT TDI and I want to pair it with an ios device. Reading this thread suggests that VGate iCar2 may do the job.

I am a little new to this, so here's my understanding of how this works (please correct me if I am wrong):

The scanner device gets connected to car's OBD port and it records various diagnostics. The device is then removed and brought in the range of a WIFI network from which software (such as Torque) installed on the ios device can read and display.

[DerAlte]

Originally Posted by aurelino

... The scanner device gets connected to car's OBD port and it records various diagnostics. The device is then removed and brought in the range of a WIFI network from which software (such as Torque) installed on the ios device can read and display.

No, the dongle device doesn't record anything. It only channels the data from the OBD port to the WiFi or Bluetooth connection. The dongle sets up a WiFi point to point connection with the tab, and doesn't need to be near any WiFi network. You just connect the device to the OBD port, pair it via WiFi (with iPhones / iPads only) or Bluetooth (for other devices), run the App that uses data from it, and that's all.

[babu.sundaram]

Bought the 10$ vgate adaptor and using with Torque app in my Wagon R. Works wonderful. Doesn't seem to eat up battery (had left on car for 36 hrs ).

[myavu]

Tried ELM 327 Mini in an Innova Diesel (August 2011 Manufactured).

The dongle got paired between Innova & HTC M8. But Torque App failed to connect to the car and retrieve any data. What could be the reason?

Kindly help.

Regards

Vinu

[RSR]

Originally Posted by myavu

Tried ELM 327 Mini in an Innova Diesel (August 2011 Manufactured).

The dongle got paired between Innova & HTC M8. But Torque App failed to connect to the car and retrieve any data. What could be the reason?

Some cars use non-OBD2 protocols, even if the connector is an SAE J1962 one. Therefore, one would be able to plug in the ELM 327 and similar devices, but they would not be able to read any data. The pins that supply power to the device are the same, so the device would receive power and would be able to pair with a phone, but it cannot read data.

In India, I believe cars manufactured after a certain date (probably coinciding with the introduction of BS-IV emission norms, I think) are all OBD2 compliant. Some cars manufactured before this date may have compatibility issues, even if they have an SAE J1962 connector.

I don't know about the Innova, but this issue is common on many Maruti Suzuki models. The ones manufactured after a certain date are all OBD2 compliant, while the earlier ones follow native protocols that cannot be deciphered by a generic OBD2-only device.

[a4anurag]

Originally Posted by myavu

Tried ELM 327 Mini in an Innova Diesel (August 2011 Manufactured).

The dongle got paired between Innova & HTC M8. But Torque App failed to connect to the car and retrieve any data. What could be the reason?

Since it is 2011 manufactured, the car is using OBD2 connector do not an issue.

The dongle did pair but Torque App isn't reading which means there is an issue with the App.

What is it displaying? Is the Bluetooth pairing correctly?

Do reinstall the App.

Originally Posted by RSR

In India, I believe cars manufactured after a certain date (probably coinciding with the introduction of BS-IV emission norms, I think) are all OBD2 compliant.

IIRC, cars manufactured after 2009 are OBD2 compliant.

Most of the major manufacturers updated to OBD2.

[myavu]

Originally Posted by a4anurag

What is it displaying? Is the Bluetooth pairing correctly?

Do reinstall the App.

The same Android App along with Windows Phone OBD App is retrieving data from my Beat instantly.

So it could be related to some other Protocol issue .

Cheers!

[a4anurag]

Originally Posted by myavu

The same Android App along with Windows Phone OBD App is retrieving data from my Beat instantly.

So it could be related to some other Protocol issue.

In the Torque App, goto 'Settings' and in that the General settings tab, scroll to the bottom and look for the HTC/Samsung device. Put that on Automatic if not selected.



EDIT: Why not use the same Windows Mobile on your car to check whether data is being displayed or no.

[myavu]

Originally Posted by a4anurag

Why not use the same Windows Mobile on your car to check whether data is being displayed or no.

No, Windows App too not retrieving data.

In Beat, both Android and Windows Phone App is quite straight forward. Connect the dongle, Pair it to the phone, Start the car and Start the app - Voilà! data retrieval is instantaneous and smooth.

Cheers!