Of note this installation does not use the FiTech fuel management system, but an inline outside the tank fuel pump and return line. I personally want to use the fuel management center option that mounts under the hood and does not require a return line.
Rob
Rob
Couple of comments about the "fuel command center" (FCC)
(1) A number of people have had issues with it based on forum posts I've read... and a number of these guys really do seem to know what they are doing. On the Chevelle site a guy with the handle "relrd" has installed both a FiTech and a Sniper... he had major issues with the FCC
(2) In actuality you do need to run a return line. There is vent on the FCC which is there to allow the FCC not to over-pressurize from the air bubbles picked up in the tank by the mechanical pump. Since liquid gasoline can sometimes make it out the vent, it is required that this be vented back to the gas tank. Hence, you do need to install another line back to the tank; albeit, I don't think it needs to be a high pressure line. But this type of return line needs to enter the tank *above* the fuel level so that it can vent correctly. Many tap it into the fuel filler tube in the back of the car.
Of course the nice thing about the FCC is that it solves the "fuel slosh" problem that you get with a standard gas tank so that you don't get air bubbles in the fuel line. However, there is another possible way to keep your standard tank and use an inline pump (with a fuel return line). And that is to use a Holley Hydramat on your standard fuel pickup unit...
https://www.summitracing.com/search/product-line/holley-hydramat-fuel-pickups
With this setup your return line could (I think) hook right into the drain plug.
There is final setup which (I think) can be run completely returnless. That is, per above, use a Hydramat on the fuel pickup, an inline pump, and then use an efi filter with an integrated pressure regulator for an "immediate return" to the tank (again, through the drain plug?). This one is rated for the same pressure as the FiTech TBI
https://www.summitracing.com/parts/...-_-tanks-inc&gclid=CMa44rj88tICFU9bfgodycIAJg
This last setup is not one of the setups that FiTech has in their instructions but I think some people have gone this route...
Back to the FCC... another benefit of the FCC (as with other options using a tank with a standard sending unit) is that it is easy to switch back to a carb (swap a couple of hoses). The reason that this is a benefit is that if you ever run into a situation where you're trying to find the source of a problem, you can easily confirm/eliminate that the issue is/is not with the FiTech by swapping back to the carb. I think the people that completely commit to a EFI fuel system without this "swap-ability" are going to have major headaches if/when gremlins show up that could be coming from the either engine or the EFI (eg clogged injector vs a bad plug wire etc)
For all of these you need a tank vent or vented gas cap.
Aside: I really wish FiTech would get to the bottom of their issues with the FCC. It's a great concept but it's got enough bad press that, personally, I would not use it *at this point*...
James