Can anyone recommend what type of tune for my 5.3 Silverado? I'm sort of new to this, but I've seen stand alone reflashed PCM's and handheld tuners, etc... I liked the idea of the handheld tuner and being able to switch back and forth between say a 87 octane tune and a 93 octane perfomance tune. Any companies for the tuning software you guys could recommend? Specific tuner hardware recommended?
Thanks guys!
