I recently bought the SCT X4 programmer/tuner and I'm already power hungry for more... while still hopefully staying in the clear of causing damage down the road from trying to push "too much" out of my 2005 F150 5.4liter. Even though I'm already wanting more, I still have to stay that I am BEYOND impressed with what the basic "pre-loaded" 91 octane tune did for my truck. Shift points are WAY smoother, and speedometer is a hell of a lot closer.

SO, where would the best; most reputable shops (or websites) to go have a custom tune drawn up for me be?

Any and all references are appreciated!

 

Have you read any threads in the Chips, Tuners & Programming forum yet?

 

If you do not have an aftermarket intake, the preloaded tunes are just fine.