Thread: Fuel system discussion

Which fuel plumbing route do you use / would you prefer and why....

Forgive my horrible ms paint skills.

#2 so you have consistent fuel pressure across the fuel rail.

#2 is essentially like stock and how mine is now,

but I was watching a mighty car mod video a while back and they briefly said they use #1 because you wont heat up your fuel by allowing it to cycle into the engine bay and then back to your tank. I think it the turbo V8 Stagea build video. Thats also how they did the fuel system on Super Gramps.

Finally someone worst at MS paint than me

#2 is how Aeromotive advised in their FPR install manual.

It is probably going to really depend on your specific application. In most cases, #2 will be what you want. Pressure is the same across the rail, the regulator will adjust for pressure depending on how much the injectors are flowing, etc. #1 will not allow for changes in fuel usage (pressure drop), and will only try to regulate pressure supplied by the fuel pump. #1 may require an adjustable regulator in order to have a bit more pressure going to the rail than a stock config.

None of the above

I'm sorry what? I was distracted by your avatar....