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What tuner would you guys recommend?
I do it for a living on motorcycles & quads, but different systems altogether.
Thanks for the infoMany like a 5-Star tune from Mike. I have one on my SCT tuner and it's pretty decent. It is a 'can' tune after all, so you will get what you pay for, which is a generic upgrade that improves your overall driving experience, while still playing it very safe as far as ECU mapping goes ...
I believe Jon Lund of Lund Racing offers a custom tune which is derived by logging your ECU under idle, WOT and cruise modes to produce a tune that is specific to your truck and therefore allowing it to work closer to the maximum potential of your set-up. Speak to Jared at Lethal Performance and he'll hook you up. My GT500 was tuned by these guys and it hauls ass - over 600rwhp on tap!