I have the desktop dyno 2003 version. I don't put much stock in it but the results I got plugging in my combo seemed pretty right on. I have a mild 408 smallblock with eddy 60779 heads and a comp 275hl cam. The curves it shows seem pretty right on compared to driving the car.

I definitely used the program when I was picking out components, not as a for sure dead on simulation but as a fun way to see how different factors might work together. Here's the graph it spit out for 10.5:1CR headers and 750 holley with my cam and heads:



Maybe the more exotic builds don't compute as well?

I agree, there is not a lot of guidance on what inputs to choose. It doesn't let you put the header dia and length in, so what is the right choice? But once you get the model set to reflect your actual dyno numbers, you can use it to see what a change would do.

I was going crazy with nutty outputs until somebody pointed out an input mistake I was making in the head flow screen (valve dia).

I was just playing around with cam quest and the average hp and torque #s with my cam are way better than the cams, cam quest recommended but the peek hp is lower by 20 hp, whats better average or peek for moving weight