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I scared a 07+ 1/2 ton 5.3L today with mine . At the first stop light i was still in Econ setting and he started evin it up right when the light turned green, I mashed on it, took him off the line but he caught me pretty quick. Next light I flipped to Performance, locked in 4x4, and made an attempt at a boosted launch i wasn't near as easy to catch that time
A turned up DB2 can perform similar. My Z71 has nowhere near all of the performance mods done to it, there is more power to be had i think.
With vehicle in Drive...hold left foot on brake pedal and slowly ease into the throttle with your right foot...when you get to the desired boost pressure on your gauge that you would like to launch at...you abruptly release your left foot off the brake pedal and stab the accelerator pedal to the floor...How do you do a "boosted launch"?