I want to upgrade my fuel rails to billit rails from fast and get a fpr to match it.. My 01 has 2 lines going to the factory rails and just wondering why it has 2 when i have seen other Gm's with 1, and how i have to hook them up to the new set up..

 

return style fuel system...newer ones are returnless...started in 04 or 05 i believe

 

I see... So how do I hook em up? do i put the feed line to the fpr and then the rail.. then from the other rail to the return? common sense would say that to me but sometimes u never know..

 

Ive seen both the y version and the other way too. Lemme find the pic...

 

Thanks man that really helped

 

#1 in the first pic could run out of fuel. At least thats what people say, but I assume it's with a turbo setup or something.

 

i was thinkin of going with number 1 in picture 2

 

Need a regulator with more ports... #2 in pic 2 is probably what I would go with and have seen a couple of times. Search for fuel regulator here or on ls1tech and you might find some setups. I saw a couple edelbrock pro flo xt ones.

 

Here are some ideas: https://ls1tech.com/forums/fueling-i...uel-rails.html