That MAP sensor is listed on eBay for $164.29 so your $250 R&R cost is less than an hour of a dealership shop time, specific to '07-'09 models -
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Attachment 74980
Looking at the picture it can easily be tucked into a tight spot where it can be overlooked but it doesn't look to be made for inside the intake. Are you sure that your car doesn't use a MAF in the duct just ahead of the throttle body? The MAP sensor is the input for a Speed Density type EFI, and the '07 to '09's may have changed to an air flow input which is more common on cars today.