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Old 01-11-2005, 05:21 AM
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Default JDM H22

Ok, I was wonderin if anybody could explain the 10 horsepower difference between the 4th Gen USDM AND JDM engines. What made the JDM's have 10 more?
Old 01-11-2005, 05:31 AM
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Default Re: JDM H22 (mikester_91)

for one, the jdm has 10.6:1 compression compaired to the h22a1 with 10.0:1. not sure of other differences, i know theres some emmissions stuff.
Old 01-11-2005, 10:05 AM
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Default Re: JDM H22 (mikester_91)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mikester_91 &raquo;</TD></TR><TR><TD CLASS="quote">Ok, I was wonderin if anybody could explain the 10 horsepower difference between the 4th Gen USDM AND JDM engines. What made the JDM's have 10 more?</TD></TR></TABLE>

its to due with the slight raise in compression, and probably a slightly more aggresive fuel/spark map with the jdm ecu, because the have higher octane gas as a minimum than we do..

and its only 10hp at the crank, that is pretty negligible
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