My fuel system consists of a rear mounted fuel cell w/ 2#8s feeding Aeromotive A2000 mounted near the cell w/by pass to tank line pressure is set at 25#.Out of the pump is a #10 which feeds a Pro System special regulator set according to thier instructions. This system flows a gallon in about 11 seconds. My data logger says the system pressure is 11-12# during the run. I've tried VP M-3 and it ran the same for me as regular methonal. I bought a drum of M-5 to try but never made a pass just tried to get the tune up right it,sure is a lot more stinky (nitro parrafin)than regular methonal. I looked at Q16 but It looked pretty pricey.I also like the methanol because your opponent cant hurry you or burn you down. By the way I've got an APD alky dominator if anyones intrested.