I am a little confused here. What changes did you make to your car to get the 5hp increase in your first set of graphs? What changes did you make to go from 167hp in the first set to 224hp in the second graph? That is a sizeable power increase. As I read it the second graph shows a before/after header install increase of 7hp which is pretty close to others findings. Can you clarify?
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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