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Old 06-02-2009, 03:55 AM   #42
Scooby Specialist
Member#: 89752
Join Date: Jun 2005
Chapter/Region: SCIC
Location: On the dyno at Yimi Sport
08 STI


Nice test Jeff. I've got an 08 STI at the shop that I'll be finishing this week with Cossie heads/cams, Cossie manifold and a .82 GT3076R. I hope to see some larger gains with this combo than you saw. IIRC, your car is running the Cobb SD patch. Wouldn't you expect to see the AFR's lean out a bit if VE was improved by the manifold? Afterall, higher VE would translate to increased airflow for a given boost level. That would lead to an SD fueling car running leaner.
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