i dont know im afraid mike, it was on a car just as i joined the company so wasnt really involved. i imagion they did, i think it was more down to the problem of boost levels ect. think they had a a1000 on it, was a type r powered exige running just over 2 bar boost. from looking at the flow chart i think it was just down to the fact that at 5 bar the flow rate dropped right off. but as said...not to sure. but its put the boss right off them so would take some convincing to get him to use them again. which is a shame as running 2 eliminator pumps seems like the right way to go at the moment