Desktop Dyno, accurate?

[MEDIK418]

A little history that may bore most of you but anyway. . the theory behind the program goes back to pre-WW2 fighter airplane technology. The aircraft builders came up with this type of parameter comparisons to predetermine horsepower levels without having to actually build the different engine combos. THe principles are sound but as mentioned in an earlier post they cannot take into consideration a lot of environmental as well as design variables that can have a major impact on outcome.
What Dyno software is good for is helping deterimne how much of an improvement certain "performance parts" will have on an engine. If you already have your particular engine's parameters in the database, you can see a fairly accurate indication of the amount of change a particular part will make. Most helpful in choosing cams, intakes, cam timing and such. No it may not be dead on but it should be close. One thing I have noticed. . .the program thinks headers are the best thing since round wheels. I can add open headers to a go-cart engine and pick up 75 horsepower on this thing. I use it to compare the different cam profiles and how they compare to intake volume a lot.
Anyway, it's a lot of fun to play with.