With just the Tranny tune I've pulled off a 7.13 second 0-60. That's with a 1000 rpm launch. Much more than 1100-1200 and the tires will spin. I have the 3.73 gears running stock 18" 265/60s. The truck is rated from the factory at 8.9 seconds so that's a huge jump, and that's not even with the custom tune I'm waiting for.
I hope the time is accurate but I have to wonder. The first 1/4 mile time I recorded showed a 60 foot time of 1.8xx seconds. I can't even do that in my Corvette. While I would be ecstatic if my truck could do that I think it's impossible in its current state so it must have been a glitch. The best I've seen since then is about 2.3xx, which more of what I would expect.
Anyway, the tune has improved the truck drastically.
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