Sorry, I'm going to have to disagree with that. Desktop Dyno is based on actual mathematical formulas, not anecdotal experience. Give two different guys the exact same engine and the performance results will invariably be different. Engine building discussions here devolve into pissing contests and name calling before the second page anyway. Who needs that?
DD is not a perfect tool by any means but it is relatively accurate as long as like you said whatever is input is as detailed as possible. Pretty sure the OP knows that and has a good grasp on what his actual specs are.
