Phase 1/2 ECU's

Discussion in 'Modifications And Maintenance' started by Threshld1, Mar 12, 2009.

  1. Threshld1
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    Threshld1 Well-Known Member

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    Ok so im trying to figure out what its going to take to use an 01 RS 2.5 block in a 97 Outback... :eek4: Dont ask...
    So does anyone know:
    Will the 01 run on a 97 ECU?
    Are the harness' different? How?
     
  2. AWDimprezaL
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    AWDimprezaL has more posts than you

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    If you are just gonna use the block, you dont need any sort of harness from the phaze 2 block. there are no special sensors that you will need, you are using your heads correct? One of the techs here did this to his own outback, he used a 2003 2.5 SOHC shortblock and bolted up his DOHC heads. It ran/runs great.
     
  3. Threshld1
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    Threshld1 Well-Known Member

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    Well im in discussions of getting an 01 longblock... this would allow me to use these DOHC heads for one of my 22T blocks when i have money to build it... so no it would be a full SOHC 2.5 motor
     
  4. AWDimprezaL
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    the only thing I would worry about would be the cam sensors, but they are the same part number for DOHC to SOHC. Ide give it a shot. most things should be the same. Both have EGR?
     
  5. Threshld1
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    Threshld1 Well-Known Member

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    Mine does for sure and im assuming this 01 does but i havent seen it yet. I cant imagine they would be too different ECU wise. Just wonder if the 3 harness connectors will match up from chassis to motor.
     
  6. Grayguy
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    Grayguy Well-Known Member

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    I think this may be semi-useful. there are a few posts about it, apparently if you swap all the sensors and everything it can work.