See my vehicle in Signature. Under certain conditions my truck seem to lunge. Usually when going fairly slow down the driveway or similar situation, and slightly increasing the excelerator. The stealer said it was the drivetrain combination of length (CC), and transfer case design. They say it is not a mechanical problem, other than annoyance.

My main question (if anyone else has this problem) is would a chip (like juice) aggrevate/amplify the problem or destroy the drivetrain?

I have had this problem on a couple of occasions. I have had mine do it while holding the brake, almost to the point of power braking. I'd say its done it about half a dozen times in 17000 miles. Been running the Juice the whole time, so i can't say if it has made it worse or not.