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Discussion Starter · #1 ·
my buddy just did a mini me head swap from a 99 ex d16y8 to a 92 dx hatch d15? it starts and runs but it revs by its self it just keeps going from like idle up about 500 rpm he says with the y8 head and all he thinks it is at 11:1 compi dunno if it is map sensor vacuum lines or what any help woul dbe nice thank you
 

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jmore everything

thats almost two whole compression points above stock. You need more fuel. You could do this with a fuel pressure regulator. or better yet a vafc. tuning is crutial with high comp. what intake manifold are you using?
 

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Discussion Starter · #3 ·
he is using the d16y8 manifold but he just drove by about 3 hours ago so i am guessing he figured it out? i dunno but any info would help
 
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