good job. 1 question, is the speedworks dyno a Dyno Dynamics machine, or a Dynamics DTS? google on DTS net no results..
inertia dynos can only function at WOT. so if you're doing fuel mapping for the entire range.. it's not the correct tool to use... as WOT would also trigger the acceleration map.. if your car is on the track..it'll be at WOT anyway..but for a street car its a different story.
in addition.. Dynojet assumes every car has the same rotating mass..which is definately not the case! assuming 2 cars with 150hp, one weights 1.5ton and another 2ton..on an inertia dyno..both cars would accelerate at the same rate.. which is not the case in the real world.
its not a case of which type is better, rather its a question of which type do you need. inertia dyno measures power the "road" will see. modifications by using a lightened flywheel, crankshaft etc. would not be reflected on a steady state dyno (load dyno). reason being, the engine is not producing more power, but there's simply more power available to accelerate as less power is required to accelerate the flywheel and crankshafts etc.
i'm personally looking forward to have my car tuned for street use..after doing some mods that is.. around the 2k-3k rpm range for city driving.