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patkeefe patkeefe is offline
one of the great unwashed
 
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Join Date: Apr 2004
Location: Ringwood, NJ
Posts: 2,850
I would imagine last night's test ride exhibited the same AFR curve I posted from the dyno sheets, more or less. This is without the IA head. In theory, there is no way I should have that sort of enrichment under 4500 RPM, but I still have it. There are a few others on this board with these same symptoms and an IA head, but I am starting to think it is not the fault of the IA head, at least in my case.

So, I am either overfueling or maybe underburning what's in the chambers at this rev range. I think it's time to start systematically eliminating any other factors, such as ignition, air leaks, etc from the equation.
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Patrick E. Keefe
78 SC
01 Boxster
Old 06-18-2008, 03:08 AM
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