Junkyardmongrel1 Posted April 26, 2017 Share Posted April 26, 2017 1990 legacy, ej22. Are the red top injectors a direct swap for the grey tops? Link to comment Share on other sites More sharing options...
john in KY Posted April 26, 2017 Share Posted April 26, 2017 Not 100% sure but don't think that are interchangeable. Link to comment Share on other sites More sharing options...
turbosubarubrat Posted April 26, 2017 Share Posted April 26, 2017 Yes. You might need the hold down caps or can swap the whole rails. Some people say the red tops run slightly rich on a 90 ecm but my car ran perfect and passed DEQ. Link to comment Share on other sites More sharing options...
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