[BiturboS4] Re: piggyback ecu

[Ti Kan]

daniel chisholm writes:
> Has anyone heard of the piggyback ecu? It would be very nice to have a plug in ECU through the Vag-Com port under the steering wheel.. a much cheaper solution to a new ecu and chip

No, where have you heard of such a thing?
The diagnostic port is only that... it only has a relatively low speed
serial interface to the various modules, and does not have direct access
to all the sensors and controls that the real ECU has.  Thus if there is
such a thing as a "piggy back ecu" it is probably quite limited
in what it could do.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
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