njdrsubaru Posted April 3, 2007 Share Posted April 3, 2007 yeah i was looking under the hook of my impreza ej18 and under the hood of a 93 legacy ej22 and here are the little differences, keep in mind that i am very familiar to the ej22s, but these little differences blew my mind off ej18 has no knock sensor!!!!! ej18 has a EGR valve EJ18 throttle body has two TPSs off course the wiring is a little different, but no knock sensor!!!!!!!! and again no knock sensor!!!! couldnt find one... whet else am i forgeting?? give me your differences.... Quote Link to comment Share on other sites More sharing options...
Manarius Posted April 4, 2007 Share Posted April 4, 2007 .4L Out of the US, the EJ18 comes in a Carbed flavor. Quote Link to comment Share on other sites More sharing options...
DerFahrer Posted April 4, 2007 Share Posted April 4, 2007 Weird. I didn't think 93-94 Imprezas had EGRs, but they do. I just pulled up an EGR valve for a 93 Impreza. I knew the EJ18s never had knock sensors. It's probably gonna be one of my biggest hurdles whenever I get around to my EJ18-T project. And I think the second TPS you're referring to is the IAC valve. No EJ18 ever had an IAC valve mounted to the intake manifold like the EJ22s did. Quote Link to comment Share on other sites More sharing options...
njdrsubaru Posted April 4, 2007 Author Share Posted April 4, 2007 nahh its a second TPS for some reason the AIC valve is right below... i kow that valve pretty well but 2 tps!! yikes lol its weird Quote Link to comment Share on other sites More sharing options...
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