your numbers can change from one dyno to another so i suggest using the same dyno everytime. Altitude and things like that play a big part in it too. My LQ9 put down 244 stock. A lot of people get better numbers than that. Remember a dyno is just a tool to help you tune and measure how much you gained going from one set up to another. If it is running good and you are putting the spank down on the guy next to you that is what matters!

 

That's what I always thought, until I read a dyno test with a mustang, going from 3.73 to a 4.10, they lost like 7 hp... I guess it's kinda like the fact that an automatic will dyno higher torque numbers than a stick, because of the torque converter..

 

but an automatic will also dyno lower HP numbers

 

who cares just race someone who has about the same power as you which sounds like stock truck just like yours. if you beat them then you know you have more than that paper is telling you and just burn it after you win.