scottySTI3

Anyone know if there is a difference between a WRX Wagon & WRX saloon ECU ? cheers Scotty

Roojai

What year? On the early models the wagon uses a different turbo to the saloon so the map will be very different.

Bob Rawle

The main difference on some earlier wagons is compression ratio which means that ign maps will be VERY different.

bob

scoobfan

Can you elaborate on that Bob, I though the engines were the same, only the ecu was different to run the td04 (WRX).

Rob

mickywrx

iTrader: (29)

Would that not be because the wagon uses a TD04 and the saloon the TD05. Or am I wrong in thinking that. Oh, and I mean WRX for both not UK cars.

Therefore what Bob say's is correct since the TD05 produces higher boost (I think) than the TD04, therefore ignition timing etc would need to be different to compensate for this.

Butty

iTrader: (2)

The early JDM Forester (97/98) shared the higher compression engine (9:1) with its Impreza JDM wagon cousin. Both used a variant of the TD04 that gave higher torque low down but couldn't flow at higher revs.
I guess both models were specced to appeal to people needing to lug loads around.
Nick

silent running

My 98 WRX wagon used a TD04 and most of the ancillaries the same as the UK Turbo. Before I swapped out for a VF35 and Power FC, it definitely was a real lugger, happy to chug along in the 2000-4000 rpm range. It would pull away without needing to change down but was a bit gutless at the top of the revs. The VF35 also spooled up earlier on the standard wagon ECU compared to the Power FC which I put in later.

scottySTI3

Cheers people thats shed a bit more light on the subject.Many thanks