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Post Info TOPIC: Can timing be changed by the software?


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RE: Can timing be changed by the software?
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Thank you very much for the thorough and quick reply.

Zackman



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91 Sidekick JX, 8V, S. Carolina Car, 2 dr, 3 speed Auto Trani, Halifax, NS, Canada


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The timing can only be set to the base timing whilst at idle to enable the static timing to be adjusted using a timing light and by altering the position of the distributor. When the ECU reports timing it assumes that the base timing is correct, if you set base timing to 10 degrees then the ECU will still report 8 degrees.
The tool will report the values that the processor reads, if there is internal damage then the value could be skewed by that, I have had ECUs that have been damaged when a vehicle has been welded without the battery being disconnected and that damage has caused the ECU to read incorrectly. You can get a phenomena called 'parametric shift' where a component doesn't fail completely but its value is changed, this can also be caused by electrostatic discharge but the ECU does have some protection against that.

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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine
2000 Suzuki Vitara 1.6 8V, many mods
2004 Suzuki Ignis 1.5VVT 4Grip
2006 Suzuki Jimny 1.3VVT JLX+
and many more.



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Dear Guru:

Forgive my naïvety; but I have two questions:

1) Can the software be used to change the timing (i.e., say if timing is at 10 deg BTDC, move it to 8 deg BTDC?).

 

2) Moreover, can teh software be used to test the health of the ECU (i.e., whether there is anything wrong with the ECU)?

 

Thank you for your help in advance.

Zackman



-- Edited by Zackman on Wednesday 3rd of February 2016 05:45:51 PM

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91 Sidekick JX, 8V, S. Carolina Car, 2 dr, 3 speed Auto Trani, Halifax, NS, Canada
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