I don't think this has been asked already but wouldn't the pump be prone to failure faster since it is working at a elevated rate.
We have not seen any incresed wear with this pump set-up. We have been using the same pump for two racing seasons with no degredation. The improvements made are not done so to make it work at an elevated rate, only to make it work as it was initially designed (but was not able to due to manufacturing tolerances).