Increased scavenge-to-pressure volume ratio creating the ultimate oil pump for Twin Cam engines. Manufactured using the same 7075 billet material and specs as the FEULING Race Series oil pumps but feature a thinner pressure housing resulting in an increased ratio for the scavenge side of the oil pump. Test results show a decrease in cylinder head temperatures and an increased amount of oil removed from engine crankcase and camchest, eliminating power robbing wet sumping and oil carry over. Pressure Volume. 18% more than 99-06 factory oil pump. 10% more than 07-13 factory oil pump. 1% more than SE oil pump. Scavenge Volume. 60% more than 99-06 factory oil pump. 38% more than 07-13 factory oil pump. 9% more than SE oil pump.