i don't know if this info will help you but if you need that kind of flow the 044 is not capable of delivering that. i went through all the trouble when i was upgrading my car. without knowing what BHP your trying to achieve i can't comment anymore, the standard pump will flow easy 500bhp at the motor belive it or not. and in intank form the 044 by it self will do about 600bhp at 1.5 bar pressure with HKS 2540 turbos. that was why i got the HKS pump just to make sure that the pump is not over worked as it was rated at 800bhp. so i think you should find out bit more information about what you really need befor you spend any money.... if you are gonna keep the motor stock bosh 044 or the hks or any other brand name will do but if you are gonna go further it might pay to get a surge tank and maybe run twin 044's
just my suggestion
cheers.
Andrew