Hi All,

I am planning to buy a used ECU chipped by Giac. It is out of a 99.5 1.8T FWD Manual, and my car is 99.5 1.8T Quattro Tiptronic. His ECU number ends with 557P and mine ends with 559C.

Using the serach option, I found out that these ECU's are swapable. But it requires playing with soft coding with Vag-Com.

My questions are:

1) Although the ECU's are compatible, do you think the Giac chip will make a difference? Do I need to have the giac chip reprogrammed to fit into a Quattro Tiptronic?

2) How can I change the soft coding with Vagcom (I have it), where can I find the prcedure? (numerical values to be entered etc.)

3) Has any of you did this before?


Thanks a lot.
ps: I have searched this, but couldn't find a direct answer.

 

I would keep looking for the ecu that will match your car

 

Im almost positive you can change it to work with your car with the Vag Com but i honestly have no idea how to do it

 

keep looking.

 

Many time the coding will not stick - I tried this with my 98.5 and the coding would not keep. The car ran very badly and the transmission was not functioning correctly.

Keep looking. Quatto vs FWD does not matter. But the tranny differences are a big matter.

 

If it does not work with your car out let me know. I could be a potiental buyer. I'll have to check my ECU number.

 

would that chip work with a 98 1.8TQM???