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Air flow per rev are way off

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Honda hunter 1

10+ Year Contributor
83
0
Nov 4, 2009
magog, Vermont
I have a ported head with 1mm oversized valves and hks 272 cams ,I notice that my afpr are off at idle they are at 37-40 is this normal for a modified head. I have a 2g maf on my car .
 
Someone will correct me if I am wrong but I dont think it works like that. If you went to 2.3 and changed the displacement then it would change. I believe it should still be around .25
 
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