faulball67

iTrader: (2)

I've got the Dyno2000 Engine Simulator on my computer. I want to know if anyone has any experience wiith this or similar desktop dyno programs and how accurate they are. I don't have a shop with a dyno around and just want to get a close estimate of what I've got.

faulball67

iTrader: (2)

Anyone?

84zeddd

DD2000 seems pretty reasonable except the roller cam seems
to be a bit generous.

jbenge

iTrader: (2)

I have DD2000 and dragstrip simulator, it seems fairly accurate especially if you have good info to put in such as head flow numbers. The part that seems not accurate is overcaming an engine or over carbing....it doesn't seem to simulate those conditions well. Bigger cams and bigger carbs seem to always make more power through the entire rpm band. Its a good tool to use in comparing combinations but be careful of certain parameters you enter.

383backinblack

the thing is basically a toy, and it won't really accurately simulate any engine thats out of the ordinary parameters

for instance, it won't even accept the I/O, I/C, and E/O, E/C numbers for my cam shaft.......and if you use the numbers it forces, its like 100hp too high.

its fun to play with, but thats about it

Shagwell

main thing is for any accuracy, you need head flow specs. - also, I don't like that it only uses advertised duration. @ .050 would make for much more accurate numbers. - If you have ALL the perameters, it seem spretty accurate. Out of three motors I've been able to simulate + put on a dyno once built, desktop was 5hp shy on 2, and 3 high on the other. - tune/air conditions can make more difference than that. - as for the bigger cam/bigger carb thing, it doesn't seem to really show what a carb/Tb change really does. - As for the cam though, I've had no problems. As soon as I started over camming, I started seeing the side effects. But, again, I have always had my proper head flow specs. Also, be sure you switch to the "table" chart and read the real numbers @ a given rpm.

383backinblack

head flow specs on that program, which i have, are useless as well

because theres no way to account for port velocity or combustion chamber design....quench area etc.

Demon355

iTrader: (1)

anyone know where I can download this? or maybe purchase it? Not off the internet as I've already found them. Maybe in performance shops?

fb305svs

was a 100hp off no matter how i fiddled with it, and i built the engine, and got the program later, so i knew ALL the numbers... no matter what i fiddled with in the program it was way off....

crazyjim

DD2003 is the better program, allows you to enter in a LOT more peramiters... cam duration is @.50 takes into account the Lifter Acceleration Rates, ramp angles, LSA, etc.

1989GTATransAm

iTrader: (3)

I purchased DynoSim a couple of weeks ago from Summit. I put in the parameters of my current combination and it turned out to be virtually dead nuts on. It showed 405 horsepower and on the dyno I made 322 with an automatic trans.