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2001 boxster base 85000 mi. Changed the oil and filter Friday. Out for a drive Sunday and CEL come on at a stoplight. Code 1128 and 1130 pending. Pulled the MAF and used almost an entire can of MAF cleaner on it. Reinstalled the MAF, started the engine with the cover off. Noticed a puddle of oil on the engine below the oil filler tube. tube has been replaced by previous owner part number sticker with manuf. date of '04. AOS is covered with oil and dirt debris. Can hear hissing from this area tried to feel for an air leak (suction) around the filler tube but nothing but a hand full of oil. Pulled the oil filler cap with car running and engine bogged to rough idle. Replaced cap and cover and went for a drive. Engine ran smoother than before the MAF clean. No CEL but checked for pending codes. Both P1128 pending and P1130 pending. Any ideas?
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