Anyone Know of Online Engine Dyno Software so I Can Test a Few Combos?

I just had my stroker built and the desktop dyno was dead accurate on hp but torque was off by 20 ft,lbs. I did not have my heads flowed but I sent an E-mail to Ryan at Shady Dell about ported "J" head flow and simply used his figures along with other published air flow figures and came up with an average and plugged them in.