13B you can only run the off the shelf maps with with the parts that are stated in the mapping details.
putting any intake other than the stock one (unless stated other wise) is not good. The maf calibrations are critical to tuning the car.
on the stock maf calibrations with the stock intake the fueling table will represent something very close to what is really in the exhaust.
was the 07 xpt map that blew your buddies car up an sti. if so not a suprise their timing is very weird and i almost want to say the cobb 07 sti maps are kinda crazy too.
if it is was an 07 wrx xpt map then your buddy did not have all the off the shelf parts and should have gottin a custum tune. i have an 06 wrx and know a little about those maps.
if you look through some of the xpt forums under the free maps you may find a familiar name.
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