N-14 in 98 Int 9400

Hi guys-You've all been very helpful solving issues that I've had problems with. I'm a company driver driving a '98 Intl w/N-14 engine. They have installed a fuel filter that looks like a fishbowl (clear) along with the standard filter on the side of the engine. It seems to me that this is overkill and power is suffering. All our Detroit powered trucks only have one fuel filter(fishbowl type). Is there a bypass or filter eliminator for the one on the side of the engine block? I'm asking because our shop specalizes in Detroits and every time they work on my Cummins, it seems as though they can't get the air "burped" out of the fuel system and power suffers. THX in advance