i have aquired a 4b impreza ecu and i wondered what impreza it belongs with

 

Never heard of it. A 3B is from a 1994 WRX Wagon and setup for the TD04 Turbo

 

yeah i have never heard of it but thats whats in my jap wagon wrx

 

I've been upgrading Impreza ECU's since 2001 and have seen plenty of variants but never a 4B.

It may be from a Legacy ? as the Leggy of similar years runs a similar ECU, but not with a TD05 Turbo AFAIk.

 

sorry i double checked it is a td04 turbo but it is definately a 4b ecu

 

There was a link on here somewhere to a Jap site that listed all the ECU and car model codes. But I only used it once.........

The Wagon ECU I know of are : 1C, 3B, V5 & V9, with the V5 being an Auto IIRC.

 

The 4B ecu was used on 'C' series WRX wagons with auto transmission.

 

what does c series mean

 

Have you got the link to the above mentioned site ?

As mentioned I looked at it once, but didn't entirely agree with some of it from my own expereinces.

 

There is a list on the prova website, not sure if that is the one you are thinking of. Unfortunately they removed the early cars from the list and now only have the v5 models onwards.

AP,ECU適合一覧　2006.09.12

I'm doing the rest from memory, and sometimes get it wrong! Being a japanese site, they do not list the UK/EU models.

'C' series ran from late '94 to late '96 pre-facelift models.