Will this ecu work with my car?

[silvereclipseRS]

I have a 91 GS-T, I went to the junk yard and picked up a ecu from a 92 or 93 Tsi, not really sure but I was just wondering if it will work with my car it's 5spd, but the Tsi was an automatic, I don't think that matters, any info would be great, thanks.

 

[89PROOF]

From the 1000 Already Answered Questions -

What are the differences between a automatic tranny car and a manual tranny car?
For 1Gs, there are several differences between manual and auto cars of the same year, aside from (duh) the transmission.

Auto 1G cars have
- smaller turbochargers
- smaller injectors (390cc)
- a 'power/economy' switch located next to the shift lever
- ECUs designed for the smaller injectors
- cams designed to produce more low-end torque [1G only]

Manual 1G cars have:
- bigger turbochargers
- larger injectors (450cc)
- a nifty little coin holder next to the shift lever, a fave place to put electronic widgets of one sort or another.
- ECUs designed for the larger injectors
- ECUs designed to produce less low-end torque [1G only]

2G owners rejoice, as their auto and manual cars have identical engines - assuming, of course, you are comparing apples to apples. Aside from the presence/absence of the 'power/economy' switch, there are no other obvious differences. There still may be additional differences for both 1G and 2G cars.

VFAQ electrical lists ECU part numbers - HERE

I'd have to presume that the car will start & run with an AT ECU in it, but you will probably encounter drivability issues due to the differences in injector size, akin to putting your MT injectors in an AT car and hoping the computer adjusts for it. Hope this helps. Good luck with your computer problems.