Ok, here's answers.

PCM/ECU=Worthless
Chip=Worthless
I/H/E will net you some gain, don't expect to get 220whp, but you'll get something.

Take it to the dyno and see where your power begins the die, that's your shift point.

As for the 220whp, post a picture of your engine bay, mod list, and a dyno sheet and then I'll believe youh: