I was surfing Hypertech's site and saw these dyno #'s....these seem WAY low for a stock 2003 6.0

 

35hp and 34tq......looks possible. But those numbers are the highest difference on the whole dyno. Those are not peak power numbers. The hp #'s are falling off by 5500rpm and the tq numbers are at 1250....whatever.

 

Well, it has been accepted that the HPP3 programmer is nothing more than a glorified trans/tire height/gear controller that adds very little HP.

Those numbers are WAY too high for what the HPP3 is supposed to add and the output of a 6.0 seems too low unless it is running poorly.