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Is the VIN of your car stored in the ECU?

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Old 06-30-2003, 07:56 AM
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Default Is the VIN of your car stored in the ECU?

Here's my dilemma. I'm impatient to chip my 2001 H-box S4 (yeah, I know...old sig). Originally I planned on keeping the stock ECU stock and chipping a new ECU. My local tuner doesn't have any spare ECU's and I'm not about to go to my dealer and ask for one. Will it be more risky to chip my current ECU and mail order a new ECU to keep stock? Will the dealer instantly know that the new stock ECU wasn't the one that came with the car? The dealer I (will) go to has never seen the car before. Thanks.
Old 06-30-2003, 08:01 AM
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You can swap ECUs, as long as you clear codes and are careful with re-installation
Old 06-30-2003, 08:05 AM
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no, but there's ecu production date on the sticker. If it's later than car production date - well...
Old 06-30-2003, 08:08 AM
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Default You could swap ECU covers to attempt to cover your tracks, but...

there is also a workshop code on your ECU that identifies the dealer who last worked on your car. You would want that to match up as well.
Old 06-30-2003, 08:11 AM
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Default I bought a spare ECU and swapped covers...

I got my spare at Claire Parts.
Old 06-30-2003, 08:20 AM
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I'd just hold out and get a new ECU to modify.
Old 06-30-2003, 08:26 AM
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very good point!
Old 06-30-2003, 09:16 AM
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Default This guy did not sell his on ebay, shoot him a mail, see what he wants for it.

<ul><li><a href="http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&amp;rd=1&amp;category=33596 &amp;item=2416841110">Ebay auction that ended.</a></li></ul>
Old 06-30-2003, 09:42 AM
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how long until your warranty is up?
Old 06-30-2003, 10:07 AM
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Default Re: how long until your warranty is up?

1.5 years or 7k miles...I'd say probably a year before I go over on mileage. The car is stock and was babied for the first 40k miles. I'll purchase an aftermarket warranty before the Audi one expires, and I'll bet they won't be so creative to find out whether a car is chipped if it always comes back with a stock ECU. Thanks for the advice guys.


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