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.