my pump internal pressure can not be right. i built my fuel pump by myself before i knew ANYTHING about fuel pumps. and i swapped some things out that i probably shouldnt have, but whatever, it runs, but it used to run alot better. leaky pumps dont make as good of power as sealed pumps. plus, my car makes more power on WMO, and im thinking that its because the WMO is thicker than diesel, and it can build more internal pressure, thats why i think it needs adjusted.