Actually that dyno reads unreal low. It's the same one my brothers LLY made 422 on and ran 12.22 at the track. Bone stock it made 250hp on that dyno which is very low so I ignore the number and look at the gains. H&S base tunes were 290, 370 and 403hp. Ours was 275 mileage tune, 285 tow tune, 400hp street tune, and 436hp maxed out race tune. This dyno is nearly always 100hp lower than any other dyno I ever use so just add 100hp to those numbers... Especially since even the h&s tunes lined up with what they advertise I'm excited to say we made 186hp over stock. What I am upset about, however, is I loaded the tune in that I forgot to cut pilot off with... I can tell you with pilot disabled and the little bit of extra pressure from not having that extra event, it has the extra 15hp to make 200hp over stock! We had the regulator(s) doing work and actual pressure got down to 27.6PSI desiring 30k on those pulls too! Lol... We are very excited and expect to see the truck run some 12.5s and 12.6s within the next couple weeks!