Thread: compression increase on 930
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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
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7.5:1 is often used number by tuners...up from factory 7.0:1. It all depends on fuel and head design I guess as some 4-valve engines go up to 9.2:1 with 1 bar of boost...
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Old 04-05-2004, 01:46 PM
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