Originally Posted by RR-04-RR B18c2 engines.. vtec kicks in around 4500 then a secondary butterfly opens up around 5800 b18c7 (dc2 type r) engines.. vtec kicks in around 5900.. no secondary butterfly so i'm assuming your EK would be a b18c2 (you can tell the difference between 2 engines by the intake manifold.. b18c2 intake manifold is reversed) sorry to dissapoint u but its a JDM B18C.... VTEC activate at 5200 then 5800 the second runner will open up.
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