Mighty 6,
Thats why I asked what kind of surge, is your fuel tank in the rear? or fuel line size? sounds like fuel problem, too small of a turbine just kills top end power but no surge type feel.
Lower boost does not need as much fuel, on dyno not fighting G forces.
However I do like your new turbo choice. Good luck!
Harry
Yes the tank is in the rear. It has to come to the very front of the truck and make a 3' clime to the fuel rail.
At first I thought that's what it might be. It has a new 1100 HP Magnafuel pump on it. So blew that theroy off. I will do some checkinng on it. I can upgrade it to a 1500 hp unit for $100. What a bargain
BTW-Thanks for the tip!