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Risks with modified SW
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Topic: Risks with modified SW (Read 4161 times)
e_pacman
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Risks with modified SW
« on: January 23, 2012, 09:13:06 AM »
I'm new to this chip tuning business but kind of curious about it. Just wanted to check what the risks are when dealing with programming the ECU (on my Seat Leon 1.8T) this way, especially with modified software? I have some experiance from the automotive software field, so not completely new to engine management. If I know what I'm doing, and change around in a few maps in the original software, what can go wrong when I download it to the car? Would you say that there is a big risk that something goes wrong with the ECU anyway, because of glitches with the programming itself, or is it a nice and stable procedure?
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Tony@NefMoto
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2001.5 Audi S4 Stage 3
Re: Risks with modified SW
« Reply #1 on: January 23, 2012, 12:38:31 PM »
If the ECU is programmed incorrectly over OBD, then you will need a boot mode flashing utility to recover it out of the car on the bench. This can happen if you lose connection while programming, or program the ECU with an incompatible file.
If the file you flash hasn't had checksums updated, then your car will not run until you reflash it with a valid file.
If you put an incompatible file or a poorly tuned file on your car, then you can possibly/likely damage your engine.
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e_pacman
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Re: Risks with modified SW
« Reply #2 on: January 23, 2012, 01:36:21 PM »
OK, thanks for the clarification! Now a few long days of waiting for my VAG-COM cable to arrive.
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