Do all ECU's need to removed for GIAC chip flash?

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Jul 10, 2007 | 12:45 PM

slykmr

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Do all ECU's need to removed for GIAC chip flash?

I was under the impression that these programs were flashed on to the factory ECU and there was no opening of the ECU or anything? Someone please enlighten me. Thanks.

Jul 10, 2007 | 01:07 PM

sharkster

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If you want to avoid downtime then you can order another ECU that can be flashed and then you can swap it out.

Jul 10, 2007 | 01:31 PM

slykmr

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Not really worried about down time just the part about removing the ECU and if the dealer can visually tell afterwards.

Jul 10, 2007 | 01:45 PM

sharkster

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Quote:

Originally Posted by slykmr

Not really worried about down time just the part about removing the ECU and if the dealer can visually tell afterwards.

No they can't but that depends on how it is re-installed

AKA exactly the same way.

Jul 10, 2007 | 02:05 PM

gmoney

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can the car be flashed via the OBD port?

Jul 10, 2007 | 02:08 PM

sharkster

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Quote:

Originally Posted by gmoney

can the car be flashed via the OBD port?

Hi Gmoney, no it can't. It has to be removed and benchflashed.

Jul 10, 2007 | 02:11 PM

gmoney

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good to know, thanks.

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Jul 10, 2007 | 04:42 PM

msindi

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then what was the whole flashloader thing about? only change programs after an initial bench flash?

Jul 10, 2007 | 06:14 PM

PorschePhd

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Yes, the program is loaded into the ECU and the flashloader calls the program up.

Jul 10, 2007 | 06:16 PM

#10

jhbrennan

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Quote:

Originally Posted by msindi

then what was the whole flashloader thing about? only change programs after an initial bench flash?

I too was under the impression that the ECU could be flashed via the OBD port and not have to be removed. This is what IA says about it - maybe I don't understand the process. http://www.imagineauto.com/ECU.htm

Jul 10, 2007 | 06:18 PM

#11

PorschePhd

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Ah, all ECUs in a porsche are flashed through the OBD2 hanress or port EXCEPT the 997TT. It can not be flashed in the car. It must be done through a harness on the bench.

Jul 10, 2007 | 07:00 PM

#12

sharkster

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Quote:

Originally Posted by PorschePhd

Ah, all ECUs in a porsche are flashed through the OBD2 hanress or port EXCEPT the 997TT. It can not be flashed in the car. It must be done through a harness on the bench.

Yes it sure is fun climbing in the back of a hot car in 100 degree heat, roll bar and GT3 seats