When my MAF sensor started acting up it felt like power dipped around 4500-5000 and then surged after that. That could be another place to start.
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2001 Boxster S | Triple Black | Stock 17s | Bilstein PSS9s | BAD Shifter | 6x40w Cabrio Amp | 986.2 muffler
"Sixty percent of the time, it works every time!"
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