"cleaned the cold air intake and mass air flow sensor."
Ding ding ding ding! Any check engine light error codes?
It is very common for an aftermarket "oiled" filter to foul the MAF causing the car to run lousy. Many owners have reverted to a paper filter with a fresh new MAF and restored all performance to their car.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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