also, another thing you need to keep in mind about an external surge can is pressure regulation.
stock, the fuel pressure is regulated right off the filter housing that the OEM pump feeds.
If you run an external surge can, you are now feeding the surge can off this OEM assembly, and the pressure is regulated to 52psi there, but of course it would never build pressure because its pumping right into the surge can which will have an overflow back to the tank. Now you have a pump feeding the engine from the surge can, and a regulator will have to be added.
what our working prototype thats in that car is doing... part of the reason there are so many hoses going back and forth inside the tank, is because we have the surge cans pump feeding the stock filter housing with regulator, then out the stock port at the top. this was one advantage to doing all the plumbing inside the tank, we could reuse the stock regulator. To accomplish this with an external surge can would be having a T off the pressure output from the surge cans pump that goes back into the stock assembly to the filter housing and regulator. but now only the regulator fuel is filtered, and you will have to add an external filter after the surge can's pump.
i mean i could really go on for a good hour to two about the various configurations and different ways to accomplish a fuel surge solution in this car.
i can definitely say that we ended up deciding on our final solution for a reason, because everything else was just so hokey and unrefined and overall questionable. we figured, rather than band-aid and hack the problem away... lets just kill it right at the source.
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