420A Upgraded fuel pump for 420A

[pwnzer]

Ok I am replacing my fuel system cause my pump is dead. Rather than just getting the OEM parts from mitsubishi which by the way a new fuel pump is $281, I'm going to put in an aftermarket system. I am bone stock right now other than proper maintenance (t-belt still has to go in this spring) and Autolite plugs and NGK wires. I'm gonna put in a Walbro 255 and I'm thinking Fuel lab 818 filter, with new SS lines. Should I get an aftermarket FPR? If so, which one? I plan to go to a 16g with supporting mods this summer when the money comes. Luckily my parents are paying for the fuel parts as of now because I need a properly running car. Am I on the right track?

oh and will the stock fuel rail work with all of this?

 

[KYNDL7]

Well if you are going with the wally 255 you will need an FPR. Fuel lab has an awesome FPR

 

[my4ATEurV8]

the walboro 255 will produce more pressure than the stock fule pressur regulator can handle, so u will have to get an afpr. streettunedmotorsports.com has an afpr kit thats very reasonable in price that also looks good and does a great job. i would recommend 650 injectors with some type of tunning for a minimum setup with a wideband o2sensor and gauge. also a reliable boost gauge.

 

[tec_41]

the walboro 255 will produce more pressure than the stock fule pressur regulator can handle, so u will have to get an afpr. streettunedmotorsports.com has an afpr kit thats very reasonable in price that also looks good and does a great job. i would recommend 650 injectors with some type of tunning for a minimum setup with a wideband o2sensor and gauge. also a reliable boost gauge.

Easy 4g63 guys...Let's not lead him down the wrong path.


First off, hello from Wisconsin!

To be honest, I don't think (but am not positive) you need an AFPR even if you want to go with the 255. Before I was turbo I ran the 255, 12:1 FMU (which is NOT the same as a FPR) and stock injectors just fine for a few days. Of course it's nice to have the tuneability

Stock injectors are just fine for low boost applications. They can run 8psi all day...and unless you want to build up your bottom end, it won't be able to do much more than 10psi. And there is no real option for tuning bigger injectors other than Megasquirt or Portfueler, which are both fairly expensive standalone systems.

Stock fuel rail will work just fine.