I'll have to admit I was a bit surprised. I have read everyone saying that the Mustang dyno were a bit lower compared to the dynojets. I was expecting around 170 from a dynojet, but was surprised to hear that I had 173.75 from the Mustang Dyno. It can be as you noted that there may be dyno to dyno variation as well.

I know that the JDM B18C has a little more compression, but to that's quite a lot difference between your dyno reading and mine. Did you have any other mods on the car?