V1/2 ecu question

[5OBAIT]

Ive done a quick search but cant seem to find the answer im looking for so hopefully someone can give me a definite answer.

If replacing a 4plug ecu can you put one out of a manual car into an auto & vice verser without any hassles? Or does the auto have extra wires?

[WRXONP]

the auto has its own ecu . . in most cases the difference between the auto and manual ecu is the auto runs richer than a manual ecu through gear changes . . so running a auto ecu on a manual you get rev flare during gear changes . . . at a guess i would say timing would also be different . . . . in short run a manual ecu on a manual and a auto ecu on a auto

[5OBAIT]

so do you think by putting a chipped sti ecu into an auto the possible negatives of timing issues could outweight the postives of a more aggressive fuel map etc?

[kamineko]

i think you should just try it. its the loom thats different and tells the ecu if the car is AT or MT. in most cases the AT ecu is detuned. i'm not entirely sure what the AT/MT select on the ecu does, but i believe its idle behaviour changes in neutral, or depending on the information from the TCU (i know gen2 has a few links between ecu and tcu)

[5OBAIT]

the ecu arrived today. Its one of the 200 sti chipped ecus (SA 00070). Plugged in & taken car for test drive. Probably the cheapest & easiest upgrade ive ever made!!!

The only noticeable "issues" I can tell so far between the MT/AT ecu is:

The Power button doesnt seem to work anymore.

It does idle slightly higher in neutral but only margainly.

If i notice anything else ill post it up but otherwise I very happy with the inital results.