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Old 01-08-2013, 04:33 PM   #18
Scooby Newbie
Member#: 274436
Join Date: Feb 2011
Chapter/Region: South East
Location: Tampa, FL
2011 STI
Unobtanium Grey


Originally Posted by jthatch12 View Post
Is an 02 ECU plug and play with 04? My initial thought would be no. The flash block isn't even similar. The 03 and 04 ECU flash blocks are identical. I'm not an expert at this but this would be my initial question OP

I'm pretty sure they should be but you bring up a great question. As long as the car goes into test mode and the ecu sees that it's in test mode it should work. I've seen several run this setup without an issue w/ the flash block but that was my initial thought.

Thanks for the reply. I may check out the flash block setup as opposed to an 02 setup. Still think it's a bad ecu.
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