MarkD chip - Run don't walk...
and get your chip now! You'll love your car all over again. As Jay wrote in the sticky, it really is the best bang for your buck.
Got mine a couple of weeks ago. I'm running stock injectors and 91 octane for now and the difference is still very noticeable - livelier, better throttle response, torquey, somehow feels more smooth and extra bonus... better fuel mileage!
I had contemplated engine swaps but came to realize that I neither had the time nor extra $$$ to fool around so I took a chance with the chip and it turned out to be an excellent compromise. Next step is 17.5# injectors and M30 AFM combo with 93 octane. Love it!