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#13 (permalink)

07-16-2008, 11:13 AM

CHANMADD

CC Member

Join Date: Mar 2006

Location: San Marcos california, CA

Cobra Make, Engine: 1989 KCC from South Africa Right Hand Drive

Posts: 1,605

Not Ranked

Missing

My thought on this.... Could it be that your wastegate is not functioning smoothly at that RPM or that it is fluctuating. Maybe a pill in the actuator line??? Turbo's and all the related plumbing could very well be your problem.
Funny blow off valve??

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