Has anyone ever compared a HP calculator to an actual dyno run? Just curious of how accurate they are. I was playing with one the other day. When I first started racing I had my truck hooked up to a computer OBDII, which said that I was putting down around 120-130HP to the wheels. The calculator, with truck weight, and ET time, it came up with the same numbers +/-. The calculator says that now I am putting down around 170-180HP. Is this possible with bolt ons? Truck is 3.7L 4x4.

BTW, bolt ons were added after the first run, which was stock, they are, custom exhaust, CAI, colder plugs, 180 stat, efan, Hemifever tuning, weight reduction, and racing tires.

 

ive seen a 3.7 dyno with a tune and a few other mods put 180 to the tire. thats what my 4.7 had stock.

 

cool, thanks. I cant believe that the little 3.7 was capable of this. I think im gonna have someone tweak the tune a little more on the dyno this winter, or get the throttle body, I still havent decided yet.

 

If you have removed any weight from your truck it will have a similar effect.