In the quest for more power and still maintaining the factory warranty I have I decided to buy the Ford Racing Power Pack for the Shelby. The kit includes a Cold air intake kit and ford racings programmer with a custom tune to match the fuel to the new airflow.  Only took about two days for them to mail out the programmer with an SD card containing the new tune for my car.  Essentially this is exactly what they put on the GT500KR to boost the power.  The results are 40HP and 30ft lbs of torque to 540hp and 510ft/lbs.  Another item I love but they don’t mention is the added supercharger whine, the louder the better SWEEEET!