I've heard of using boost pulleys to increase boost, maybe 1-2 lbs. As to regulator, are you referring to the actuator? Its on the intake, driver's side near the firewall. It can be adjusted, and I've heard with good results but make sure you make where the original position was.

As to competent chip tuners, ask Danny in the chips forum of this board about his projects!!! The man knows modern power and chip tuning!

Ken Payne
Ford Truck Enthusiasts Admin