I Dyno tuned my truck today at a local shop they were using HP tuners.. Final numbers were 251 HP and 301 ft. Lb.. I have a GM hot cam. Long tubes.catless y and chambered muffler. Fresh plugs and 91 octane.and now a custom tune does that add up to you guys? Running stock tire size to. 265/70/17. Truck runs great it'll roast the tires taking off (g80 gave out though) but I just thinkthat I should be putting out more power what do you guys think?