Add onto or replace LPFP?

[GreyNBlueE92]

I would like to run e85 for convenience. I am currently still on stock turbos. Only shooting for around ~400 until i get a shotgun setup. I've read it's possible, my question was whether I should replace the stock LPFP altogether with a Walbro 450, or add one onto the stock pump using hobbs/jb4 trigger to not stress the EKP?

 

[tisdrew]

Replace with a 450. My 450 was pretty solid past 500whp but I needed a twin-pump setup to break into the 6's.

 

[GreyNBlueE92]

Replace with a 450. My 450 was pretty solid past 500whp but I needed a twin-pump setup to break into the 6's.

With 100% E85? That's good to know.

 

[doublespaces]

Is this an N54 question?

 

[GreyNBlueE92]

Is this an N54 question?

Correct.

 

[fmorelli]

I'm 450 LPFP, bigger fuel lines up to a healthy HPFP, E85 and stock snails circa 20psi ... no problem.

Filippo

 

[GreyNBlueE92]

I plan on doing bigger lines along with an ethanol sensor. I keep looking into flex fuel, I just wish it would work with jb4... I like being able to lower boost quickly, custom map 6 on my phone etc. Feel free to change my mind lol

 

[tisdrew]

If you're upgrading fuel lines, you can also drill out the stock fuel rail for larger capacity (or just get an aftermarket one with your PI).