I ran it a couple years on my 408 then replaced it with the magnafuel, very happy I didn't sell it. I've been 6.25 @ 110 with it and driven a bunch on the street. Heck I went 6.57 with a old Holley blue pump and a 3/8" line bent like the factory line, still have it too.
One thing that confuses me.....Magnefuel 275gph rated for 750hp max, the 300 is rated at like 850hp and the Holley is 125gph and rated to 900hp...
Those ratings are completely worthless. You need the volume graphs from the vendor if you really want to calculate anything.
My Magnafuel gave me one hiccup in the six years I had it, performed flawlessly other than that. What filter do you have before the pump? Are the flange surfaces warped?
