Josh wrote:
Doesn't the MAF max out in the tune at 255 GPS? I thought that was the limitation of the hex code used to write the software.

I would take the MAP sensor off and look at the hole it, see if there is some crap or something in there. Also, what does the data logger show the MAP reading is when the car is not running? If you aren't seeing 100 KPA there, the MAP sensor is probably bad.

That is where I would start. I don't think you'll see more than 255 out of the MAF sensor, and I think there is something wrong with the MAP sensor. I can't imagine that you'd be seeing enough of a restriction via intake tract to significantly decrease the power.