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GIAC Chipped - VAGing problem

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Old Jun 1, 2004 | 06:49 AM
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Default GIAC Chipped - VAGing problem

Ok, so i got a GIAC chip for my 00 1.8Tqm

The chip is great and i love the power but i cant seem to vag the car now. It doesnt get any reading on any of the modules. Everything else on the car is stock.

Did i hook up the ECU wrong?

BTW; Got the complete ECU with the GIAC chip from some guy on auction. All help is appreciated
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Old Jun 1, 2004 | 06:54 AM
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Sounds to me like there is something wrong with either the ECU or the chip.
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Old Jun 1, 2004 | 06:56 AM
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Did you try putting your stock ecu back in and check if the vag works?
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Old Jun 1, 2004 | 06:57 AM
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i would agree
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Old Jun 1, 2004 | 06:57 AM
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Default Does the car run?

If the car runs, the issue is probably with your VAG cable. Take apart the serial connector, and examine each wire to make sure it's still making contact with the pins. If you don't have a connector that comes apart easily (newer models don't) disregard...it's probably not the cable. The newer cables are better constructed than the older cables ross-tech used to sell.
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Old Jun 1, 2004 | 06:59 AM
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Default That's not hard...

I've had to re-solder my ISO-COM several times..
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Old Jun 1, 2004 | 07:01 AM
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It's most likely your ECU.
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Old Jun 1, 2004 | 07:05 AM
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Default Do you have an aftermarket radio installed?

I do, and this has caused me the same VAG issues you speak of.
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Old Jun 1, 2004 | 07:39 AM
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Default Re: GIAC Chipped - VAGing problem

Completely stock other than ECU. I also VAGed a friends car and it worked fine.

Car runs fine and actually lots of power+very smooth.

Appreciate the advice
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Old Jun 1, 2004 | 07:44 AM
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Default I had an issue with a serial cable before...

vag worked fine on my car, wouldn't work on a friend's car. Turned out to be the cable. Check it.
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