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  • Member
  • Member For: 11y 13d
  • Gender: Male
  • Location: Melbourne
  On 05/08/2014 at 5:17 AM, masda74 said:

well I will have to check this later on as I don't have my tablet with me.

However I get the feeling that the temps difference is now 40 degrees instead of 20 degrees out.

I will verify this later and let you know.

Just out of curiosity, with the formulae, how did you come up with the number 3 and 68?

what do those figures represent.

Surely the formula is defined somewhere on the net?

yeah its def out according to your forscan temps(which I think are more accurate than the IR thermo readings)

the 3 is multiplying the sum of a and b, and the 68 is divided by whatever comes before it in the equation.

to get it right in torque, we need the equation that forscan uses to calculate EOT. I've searched but cannot find it

might try emailing forscan, see if they will tell me

Edited by burkey05
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  • Donating Members
  • Member For: 11y 6m 1d
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  On 31/07/2014 at 1:53 PM, masda74 said:

Went for a drive. keep in mind that it can take up to 30 seconds to a minute to swap between torque and forscan. I am not sure how accurate this is.

Results:

Torque -------------- Forscan

70 degrees -------------- 93.0 degrees

78 degrees -------------- 95.6 degrees

77 degrees -------------- 94.0 degrees

75 degrees -------------- 93.1 degrees

74 degrees -------------- 91.9 degrees

Please remember that you can not have both Torque and forscan running at the same time.

Cruising home today and my app matches your figures pretty well (torque)

I did notice that they are very similar temps to the trans fluid temp (have external cooler)

  • Member
  • Member For: 11y 5m 10d
  • Gender: Male
  • Location: Brisbane

The formulas are secret unless you have heaps of cash and that's how the manufacturers want it.

How the formulas come to be is a bit of a mystery but im sure it took an engineer to come up with them. I got the *5 /72 off a Siemens data sheet, they manufacture the CPU in the pcm(I think it was Siemens anyway...) it also had an offset of -512 but I couldn't even get close with it in the equation. Even with the data sheet it's hard to determine how to structure the equation, which could even vary depending on how the software calculated it(forscan, torque, proprietary scan tools)

As for those temp readings they cant be right, engine oil needs to get to atleast 104 degrees Celsius to burn off contaminates from the oil(PCV system)

As I have mentioned before if you still have the heat exchanger setup on your transmission, fluid temps should end up pretty close to ECT, science says so.

Edited by barnz
  • Member
  • Member For: 11y 13d
  • Gender: Male
  • Location: Melbourne

so barnz, you think there'd be no point emailing Forscan;

1. they wouldnt tell me the equation

2. it wouldnt necessarily work with the torque app anyway

  • 2 weeks later...
  • Member
  • Member For: 10y 10m 4d
  • Gender: Male
  • Location: Perth

My bluetooth adapter has just arrived in the post and I've downloaded the app. Now there is no way I can be retarded and screw anything up with my car in terms of the tune? That can only be altered with the X4 right?

  • MattyP
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  • Member For: 12y 11m 26d
  • Gender: Male
  • Location: Central Coast

Correct

All this does is pick up what the ecu is doing via the obd2 port and send that info in raw for to torque then torque decrypts it and gives you all the lovely read outs we have.

It can clear fault codes but that's all it can send to your ecu

  • Member
  • Member For: 10y 10m 4d
  • Gender: Male
  • Location: Perth

Sweet cheers for clarifying that, knowing me I would of mucked around with options and put my car back to stock if there was a way lol

  • Talks Cheap, Let's Race
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  • Member For: 18y 5m 15d
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  • Location: Atherton, FNQ

I got a xcal2 and the livelink software, might have to try it and see if I can get the EOT from it sometime

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