poouch22

iTrader: (1)

I'm a bit confused on ebay there is a few ecus for sale on a couple of the ads they say upgrade your ecu from your wrx to an sti has any done this and wot has been the out come any problems any info would be good

danog

You cant just plug in a sti ecu into a wrx and expect it to work. for one the sti ecu controls the A.V.C.S. which the wrx engine does not have and also the injectors cc on the two engines will be different and mafs.

dj219957

the only standard ecu you wanna be runnign in a classic is either a z4 or any ecu with a polar performance chip fitted.

myblackwrx

iTrader: (1)

Unforunately he has a 97 impreza (if it's the same one as is in his garage) BUT still agree you can't swap over a wrx ecu for a sti one on facelift imprezas.

Jolly Green Monster

iTrader: (4)

Avcs was added in 2001 to newage sti.
Op has a 97

Jolly Green Monster

iTrader: (4)

It sounds like wrx ecu is safest bet

Jolly Green Monster

iTrader: (4)

Ebay seller will say what they like to make a buck!

poouch22

iTrader: (1)

thanks lads you have made my mind up i had bought an sti ecu because i got it cheap £51 IL take your advice and get the same one thats in my car 1s £130 if any one has got one cheaper let me no thanks it is the one thats in my garage

poouch22

iTrader: (1)

also wots the difference between 7.5 sti ecu and 6s ecu