I'm about to get a tuner and i'm trying my best to narrow down my options. The only problem is that there are way to many to pick from. My preferences are #1 fuel mileage, #2 hp/tq gain (for towing about 4 ton trailer), and #3 something reputable. Additionally i'd really like to keep the price lower than $600. No other mods at this time, although I plan on having a less restrictive exhaust within the next few months. Let 'er rip!!