300,000 miles on what looked like original kyosan for me. Didn't have to replace it, but did it just because it was the only old component in my accessory system.
That’s it. The mechanical pump just acts as a small lift pump. If the mechanical pump were to quit, you’ve got way over 30 seconds of fuel (depending on load) before the power surge runs dry.
I’ve run a small surge tank for a while under my hot rod. It was basically a 1q glorified fuel filter. It worked but you needed to have two pumps mounted to the frame to make it work...
It’s a small cylinder under the hood that acts as a reservoir.
You use the factory mechanical fuel pump to feed low pressure fuel into it. It then feeds a small fuel pump built into it that boosts up the pressure and sends it to your efi unit. It’s maybe slightly larger than a 2 liter bottle...
RobbMc Performance Products - PowerSurge
Another option for those not wanting to use the Fitech fuel system. My friend @houstonfj40 is using it on his fitech 40 series with good results.
I’ve heard mixed results with the fitech fuel system.