How do i get my 1999 rs ecu talk to a ej2.2?

[dharvey1020]

I have a 1999 RS 2.2 frankin car. I know what your thinking 2.2. Yes the car is a 1999 rs 2.5 with a 2.2 swaped into it. I keep it short and just say that i got riped off buy the dealer a long time ago. I am trying to sell the car right know but thats not going well. So im stuck with it. The problem is that i have a mass air flow cel on. The suprise is that there is no MAF wires in the harness. The car runs but gets really bad gas millage and is a little rougher then it should be. Wondering what might be the cheapest way to fix this car. I was thinking maybe a after market ecu but let me know if anyone has any other ideas.

The Car.
1999 subaru impreza
2.5 rs( now a 2.2)
89000ish miles.
automatic

[2slo4u]

I believe that car was MAP instead of MAF, as in using a barometric pressure sensor that reads off the intake manifold. Is you air filter box near the fender or right behind the throttle body on the intake manifold?

Could you take an underhood picture, put it on photobucket and show it to us?

[dharvey1020]

Pictures by dharvey1020 - Photobucket


this is all the piocks i have of the car plus one vid

[Storm]

Look for a MAF plug near the passenger fender. The stock airbox should have the MAF sensor bolted to it. They may have changed the engine harness with the motor and left it alone.

Put a MAF sensor into the intake tract and plug it in.....if your harnessdoesn't have the plug for it....you need a 99RS engine harness.

[dharvey1020]

I know the plug isn't there. Where do i findthe harness on the cheap? Will a 99 harness blup in to the computer if it was changed in the swap

[JWalker]

My Question is OTMFT...Why havent you broken the dealers legs yet???

[susiemk]

This is wierd, but a 2.5l DOHC ECU should run a PI 2.2l sohc no problem, & a 2.5l sohc ECU should run a PII 2.2 no problem.
I wonder if they mixed up the phases of motor vs ECU?

[susiemk]

I actually heard of alot of Outback guys dumping the H/G blowing 2.5's & plopping in a 2.2

[Snowbum]

Originally Posted by susiemk

This is wierd, but a 2.5l DOHC ECU should run a PI 2.2l sohc no problem, & a 2.5l sohc ECU should run a PII 2.2 no problem.
I wonder if they mixed up the phases of motor vs ECU?

Why is this wierd? The MAF isnt plugged in!! The ecu is compensating by throwin a sh*t ton of fuel.

The 2 engines in question are both MAF based. There should be a plug on the engine harness.....

[susiemk]

Originally Posted by Snowbum

Why is this wierd? The MAF isnt plugged in!! The ecu is compensating by throwin a sh*t ton of fuel.

The 2 engines in question are both MAF based. There should be a plug on the engine harness.....

I guess you skipped the post where he said he did not have a MAF plug...
&
Not sure if he stated what year 2.2 is in the car but Phase II 2.2's are MAP - I know because I have one with a EVO III 16G (straight off a EVO III swap) & Methanol injection.

I wonder if someone sorta merged harnesses for a MAP car in his if the MAF plug is gone...