Aftermarket FI computer...

[Rob]

Based on what I have learned so far swapping in a Subaru EJ25, I would suggest going with an aftermarket setup (if you have the cash).

However, make sure to do your research. When you get an aftermarket ECU, it will come with a 'base map' (make sure it has one for your engine !) which will make the car run, but not run optimal.
To get the max out of the computer, you will need to get someone to tune it on a Dyny. Dyno time and labour for this are expensive.

The upside of using the stock ECU is cost. It is relatively cheap.
But make absolutely sure you get the ECU that came with your particular engine and also make sure you get the complete wiring harness !
The downside is wiring hell, and these ECU's use more sensors and crap than you'll ever dream off. If you want to do it right, and not have the ECU spew error codes at you then you have to make sure that all sensors are in place, or at least make the ECU think they are in place

Rob.

[boygenius]

I found one company that sells an ecu that is pre-programed for the WRX engine. You can even get them to wire it up so all you would have to do is plug it in to the engine sensors and drive... Bad thing is that the ecu sells for $1200 last time I checked.

[Rob]

Yup, and that's a cheap one

Was it the Link computer ?
That one is relatively cheap and used a lot by the Dune Buggy Crowd.

Rob.

[boygenius]

Originally Posted by Rob

Yup, and that's a cheap one

Was it the Link computer ?
That one is relatively cheap and used a lot by the Dune Buggy Crowd.

Rob.

Yep. A very good deal for what you get. No MAF sensor so the turbo size is and intake design are wide open.

[LOAF]

Boygenius..

Here is my two cents....

ECUTEK, I just had my ECU from my WRX Remapped.. They are from Australia, I think.. but there are plenty of shops that can tune that set up...

Should be about 900 for the reflash..

Also with the Delta Dash software you can road tune your car with a laptop.. I haven't gone that way since I need it done right the first time.. (daily driver and track car)..

Had a base map that is running well but going in for a tuning session..

I was also looking at my wrx and imagining put that engine in my 78 vert..
But from some site, FROST something dot com.. they mentioned it was too wide and would require a lot of body work.. So I started to scrap that idea..

The thought of going to the subaru dealership and getting parts and then telling them its for a VW, would cause them to have a heart attack.. Either way by beetle is getting jealous..

Loaf

[Panelfantastic]

Just to throw in my $.02...
If you don't have a complete factory schematic, which you fully understand... or have a buddy who does, and you have personally seen a system that he recently did... you are asking for a headache!
This is the whole reason I went the way I did. One simple glitch can cause your project to sour and you to lose a lot of money. Yes, aftermarkets are expensive but they come with support.

[Rob]

WRT the WRX being too wide:
The EJ25 I am putting is is also too wide. I had to hack up most of the rear of the car.
However, the WRX is a 2.0, so, assuming the stroke is less than the 2.5, it might fit.
2.2's fit as well.

Rob.

EDIT: BTW, Panel is right, if you have the cash, go aftermarket....