FiTech EFI system

jbc426 said
Most recommend like sized returns with minimal bends etc to reduce the likelihood of a pressure increase on return.

Thanks for that clarification. I was hoping to run the 5/16 back but figure 5/16 to the throttle body is too small.

What size are you all running from the tank and returning to the tank when you have the high pressure pump in or near the tank?