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Old 09-21-2007, 01:20 PM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,804
Your 980 version of 104 also has variable valve timing..What the 992 has different is variable intake runner length.
Along with a few other systems ..... like DIS ignition and HFM/SFI injection.
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