ok, im currently rebuilding my evo and ive been concentrating lately on my fuel setup whilst my new 2.4 is getting built. its goin together with my fp black so it will smash 300kw on 98ron like taking a ****. keeping this in mind, ive installed a lift pump(low pressure), surge tank feeding an 044 with new lines. looking at what happened to my last motor ive come to the conclusion that there was a massive problem with fuel pressure, leaned it and melted my pistons. now im thinking, since we will be in 300-350kw area, will i need to upgrade lines?....with some help from jason ive decided on a twin feed fuel rail modified to return in the middle of the rail for good, even pressure regarding injection and ive decided to go for a nice aftermarket fuel pressure reg......ive seen people use stock lines with good results but im still undecided....here are my options....
1. twin stock 8mm lines from 044 to fuel rail(using carbon canister line)and then id have to upgrade return line to 8mm, would 8mm be big enough?
2. tee off stock 8mm line after fuel filter to fuel rail....could this be enough?
3. or upgrade all fuel lines to something like 10mm? made of what? alloy line safe with e85??

im just after opinions

 

stock lines will be fine for that power level. and they are e85 compatable. bigger lines never hurt though...maybe your wallet

 

Sounds good to me!

 

I would like to see pictures of the fuel rail when its done. sound interesting. also compare it to a normal feed rail and see if there is a pressure difference.

 

350kw is about 470hp correct? You should be fine utilizing the stock hardline under the car, it's a -6.

I doubt you'll need a dual rail setup. The factory fuel rail inlet has a tiny -4 orifice and the factory supply line to the rail is only about a -4.

Run -6 from your 044 straight into the hardline at the rear of the car.

On the engine bay side you can go with an upgraded rail and supply line (at least -6).

These are the basic line upgrades I've done and have no issue supporting 500whp on E85 currently.

 

stock lines are great a buddy of mine runs almost 900hp on them so I would just stick with them.

 

900 on stock lines that sounds good. More beer money.

 

I have a,crazy *** fuel setup... Im goin back 2stock lemme,kno if interested..i can get some pics up