December 2nd 2020 did you think I was kiddingIt will never fly.
... you need positive fuel pressure to make that carb work, all the vacuum pump had to do was keep the float bowls fed with fuel. Fish carb originally had a solid copper fuel line connected to a very roughly 4psi mechanical fuel pump and pressure regulator for a reason, you have replaced that fuel line with a rubber tube and a tiny fuel filter pushed onto it, basically your fuel line can not handle any fuel pressure. The pulse pump on your bike only had to keep the fuel moving so it could spill into a float chamber that is not pressurized.
That's a Reece Fish, mine is a John Fish which has a lower profile and efficient "stack" cast in to it.It's a carburetor, it needs a velocity stack, just like the original designer put on it:
... nothing is new under the sun. Carburetors have stacks.
and your intake tract is still way too long to perform well.
Fuel pressure is just taken care of by a low pressure electric pump 2-4psi.Should work but I don't think it will buy you much benefit, your injector type carburetor needs the fuel pressure regulated and you've taken up most of the steel fuel tank with air not seeing much fuel tank or pump and regulator, what's the fuel capacity?
... and your long T shaped intakes are going to be soaking wet inside, any benefit you see from carburetor performance is going to be hampered by poor air flow, fuel vapor separation and reversing air flow.