Just a thought....I'm not sure if you've done it or not yet, but look at all of the plugs/wires on your fuel injectors, MAF, TPS, basically all of your sensors.

The problem with my car is the wires were corroded on the MAF plug itself so the car would rev over 2500 but it would break up really bad and cut off randomly. I took my car to RE-Spec Garage in Gloucester and Danny figured it out in like an hour. We replaced the MAF plug and cut out the corroded wires and now it runs great!