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Audi Reveals Software Fix for 3.0-liter TDIs

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Old 12-02-2015, 12:01 PM
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"and would like to save my current ECU settings in the event that my worst fears are realized. "
That's easily done.
1-Buy a current ECU from a junkyard, or someone who is selling one privately after replacing it with a "tuned" chip.
or,
2-Buy a "tuner" kit that piggybacks and allows you to copy and save code loads. Surely there's at least one around, although it won't be cheap.
3-Hire a guy with a code reader/writer to read to store the load in your ECU now. This is done all the time with all kinds of computer chips, the trick is to get a guy who can work with your chip.

Of course if you should happen to restore the original software, and somehow that comes to light (say, by a dealer's ECU check or an improved state emissions test) you'd be red-handed guilty of a federal emissions tampering violation, which could cost as much as replacing the car.

The choices are all there, roll some dice, pick one, any one.
Old 12-02-2015, 12:07 PM
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I would go for 1. Replace the ECU with the bought one just before the ECU update and then switch back as soon as back home. Then every time you go to a dealer or for emission test you can just switch them back and forth. It won't be that often especially after warranty expires.
Old 12-02-2015, 12:54 PM
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Originally Posted by tomaszp72
I would go for 1. Replace the ECU with the bought one just before the ECU update and then switch back as soon as back home. Then every time you go to a dealer or for emission test you can just switch them back and forth. It won't be that often especially after warranty expires.
Not necessary. The Q5 can be tuned via the OBD-II port.
Old 12-02-2015, 01:18 PM
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flash your own ECU and create your own backup tunes... Flashing and Chipping
Old 12-02-2015, 01:33 PM
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Originally Posted by raj99
flash your own ECU and create your own backup tunes... Flashing and Chipping
From what I can see, that site only has the 2.0-liter flash files.
Old 12-02-2015, 02:33 PM
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Originally Posted by Deckardk
Not necessary. The Q5 can be tuned via the OBD-II port.
True, but the question was about keeping existing ECU settings not tuning it.
Old 12-02-2015, 02:35 PM
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^ Not seeing the benefit, unless under warranty and trying to stay under the radar?
Old 12-02-2015, 02:49 PM
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That and if you worry that your state will do something unexpected when you go for a smoke test to renew your registration.
Old 12-02-2015, 02:52 PM
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Makes sense for the warranty. Not so much for the smog test as a retune won't show up.
Old 12-02-2015, 07:30 PM
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Guys, make sure you know technically what is required in ECU swaps. The recent ideas in the thread seem to assume you can basically just freely swap ECUs with what ever coding. It's not just plug and play like it was pre-circa 2001 when the ECU started getting tied to the immobilizer function. See: Immobilizer III ECU Swapping - Ross-Tech Wiki Also see: Ross-Tech: VCDS: Immobilizer 3 ECU Swapping And/or APR's site for another overlapping description: https://www.goapr.com/support/immobilizer.html

Not suggesting or commenting on advisability of doing it, but rather the practicalities and challenges involved to know about.

Last edited by MP4.2+6.0; 12-02-2015 at 08:08 PM.


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