PDXTuning does not have a mustang dyno. They haven't used one in about a year. Were you out in Bend?
And you say above that you tuned the car and make no mention of PDX. I can garuntee that the boys at PDX would not tell you that you are making 160whp with a non-built 2.5RS, you cannot make the power you claim with the mods you have.
Refer to the begining of this post and those are the minimum mods you need to get anywhere near the power you say you have. I/H/E will not make 50whp, even with tuning, bottom line, period.