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Old 05-31-2004, 11:43 AM   #1
Scooby Specialist
Member#: 11778
Join Date: Oct 2001
Chapter/Region: MWSOC
Location: Illinois
1980 VWRabbit Diesel
w/AAZ Swap

Default difference in 02 wrx ecu vs 03 wrx ecu?

just curious, im going for a swap and wondered if they had a minor difference like wire colors or some bs like that.

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Old 05-31-2004, 04:09 PM   #2
Scooby Specialist
Member#: 42202
Join Date: Aug 2003
Chapter/Region: BAIC

Nope. I swapped my 02 ECU for a flashed 03 ECU and everything's the same. I have heard that you can't go 03 to 02 though.
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Old 05-31-2004, 05:37 PM   #3
Scooby Newbie
Member#: 47438
Join Date: Nov 2003
Location: Vancouver, BC


Only major difference is the fuel tank pressure sensors which are in the 2003 wrx's, but not in the 2002. If you do a 2.5 swap you'll have to pick the wires out of the wrx harness anyway. Just make sure you have the correct wiring diagrams for the correct ECU and take your time.
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Old 05-31-2004, 05:56 PM   #4
Scooby Newbie
Member#: 55305
Join Date: Feb 2004
Chapter/Region: TXIC
Location: Houston
2002 WRX


I have an 03 in MY02 and i have a p1446 fuel pressure evaporite code. I just ignore it.
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