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 Post subject: 2005 <-> 2006 STI ROM compatibility
PostPosted: Thu Jul 31, 2025 6:52 pm 
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Joined: Thu Jul 31, 2025 3:29 pm
Posts: 1
Can anyone confirm if I can swap a 2006 ROM into a 2005 STI ECU (without bricking)? I know they use the same flash protocol so should be fine. I have a car that appears to need a new engine harness (someone hacked up the harness previously). Wanted to build a MERP MOD SD map for it but the AA2ZJB10J doesn't seem to be supported. So wanted to try one that is is supported.

Much appreciated


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 Post subject: Re: 2005 <-> 2006 STI ROM compatibility
PostPosted: Tue Aug 26, 2025 6:48 am 
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Joined: Sat Jul 06, 2013 8:55 am
Posts: 3264
Location: NI
would depend on what region you're talking about, on a EU/UK car 2005 is cable throttle and 2006 is drive by wire so the roms won't flash over the top of each other.

If you do a test flash first and see if the first few blocks match up that's usually a good sign that you can at least flash back to your old map if it doesn't go well.

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Good luck and may the logs be ever in your favour!


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