would you be able to replace a 95 wrx ecu with an sti ecu ? and would it damage the engine as the sti is much stronger and revs higher ?

 

You could do it, but without supporting mods (lots of) your going to be asking for trouble.

 

thanks for the reply satancom was thinking the same but thought i'd ask anyway so looks like i'll have to go for aftermarket and a remap i

 

Some good options are here www.JollyGreenMonster.com - Engine management specialist (he isn't the only one who does all these)

 

STi 2 6K ECU can go into a 95 wRX as it's very similar with slightly more boost.
It is also the same Map as prodrive fitted into UK Spec cars.

I wouldn't fit an STi 1 (SA ECU), STi 1 RA (SB ECU) though as these are v.lean.