FWD vs AWD computer?

[nanookszy]

whats the difference between the computers? I have a 91 awd tsi and i have 2 spare computers, one is the MD145903 (1990)awd computer that i know won't work on my car due to electrical stuff and the other is a fwd MD166260 that came out of a 92 tsi that i had. I tried putting the 92 ecu in my car and it ran fine then all the sudden it started running like crap. I'm looking to have the computer that is in the car sent out and socketed so i can install the dsmlink. Also i have a safc and when the 92 ecu was in my car and i took the key out my safc stayed on and i'm thinking the ecu did too because the relay that is beside the computer in the console never clicked. I just need some information on all this.

 

[92DSMErdrick]

FWD and AWD there is no difference. I'm running a AWD ECU in my FWD now and have not had any problems. I could have seen there being a problem if it was a 90 ECU switching out with a 91-94 ECU. You really shouldn't have any problems. If you try the original ECU does it work properly? If your having problems with the one you just swapped in, then its most likely that ECU

 

[funniegus]

I might need a new ecu, u sellin youre 90?