Along with Marks question, Do you run dual pickups at the tank, or still a single all the way to the additional pump. Just how much is necessary to not starve the single pump. Isn't that really the key? If that single pump can't supply enough volume with a lift pump for assist, you must be turning the world black when you run.
02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.