Okay, so I did some digging, and the 04 STi will work with the 02-04 WRX harness. Not sure yet about 05, and I can't remember which year you have, sorry.
And there's nothing wrong with using a turbo timer, it just doesn't make your turbo last longer like it did back in the days of turbo Zs and Supras.
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FWD is the new AWD
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