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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
My SC was at 161 RWHP on the same dyno before I did the mods with the turbo. I believe CIS inherently goes lean at the top, as is pretty well documented in the links sand_man posted.

So, the lean out is not really an issue, as I can get richer at the top with the Leask WUR than what was shown on the dyno run. The question, as you say, is why does it get so damn rich? I am going to put the IA head back in the car tonight, try to raise my system pressure, and do an inertial effects experiment with th airflow plate.
Patrick E. Keefe
78 SC
01 Boxster
Old 06-19-2008, 12:25 PM
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