Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Stock ecu compatibility

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Old Oct 6, 2004 | 06:44 PM
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Stock ecu compatibility

will an 04 wrx ecu work in an 02 wrx as long as they are both manual?
Old Oct 6, 2004 | 09:12 PM
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Yes.
Old Oct 7, 2004 | 12:31 PM
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not without some CEL's. The 04's have a couple new sensors.

-- Ed
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