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Discussion Starter · #1 ·
Looking to drop an Evo 3 motor into an Evo 1.

I've been told that the major differences are that the Evo 3 engine has peakier cams which produce power higher up, and that the turbo outlet is bigger.

Other than this, what are the differences?

I know the Evo 1 ECU will manage the Evo 3 engine, but is there a difference in the ECUs? If so, how will this affect things?
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