Whoa. Calm down princess.
First of all, I gave the car props so I am not sure why you got your panties in a bunch. Friggin prissy Evo owners.
Second of all, Mustang dynos are NOTORIOUSLY unaccurate as they are low. They do not reflect the actual traps. That’s not a dig at your car but just the dyno in general. My point was that you go to a dyno for 2 reasons: Get #s, tune your car. I recommended going to a dyno that is REPEATABLE and ACCURATE in regards that the #s you get represents what traps you would get (Again, typically that isn’t a Mustang dyno). If it’s not accurate (ie reads high/low), it doesn’t matter if it’s repeated so you can make changes to hardware/tune and see the difference.
P.S. I can’t dyno 440WHP unless I change WG springs. 
P.S.S The DJ I went on was dead on was not the over inflated DJ #s that the masses seem to expect. But, who cares?