"Procharged 5.3 LS based engine.  I have it on the stock boost for the procharger and it still makes almost 700hp.  On full boost this truck makes almost 1,200hp.  That kid put a small turbo on his, only makes like 300hp with that turbo." He laughs. "Kid thinks he could pull me on a track and also thinks I am giving this truck all it has when I take off on him.  I am only going about half throttle on the weakest setting with the procharger."