I have a 2003 Evo Viii
Currently the car has a 3" catless downpipe with 3" catback and a k&n intake
I am planning to get the car tuned but before I do i'll be adding a muse o2 dump, ets licp, and a mbc
My question was will i need a walbro 255 as well? i heard they're good up to 300hp
Also, any idea what hp i'll be making after a tune on 91 with those bolt ons?
thanks

 

I would do fuel pump just to be safe. Never skimp on fuel mods.

 

You will need a pump, get it it's only 90 bucks. Also need injectors and you should be good for like 320-350hp on 91 on a dynojet...I'd add a FMIC before the o2 dump imo.

 

yeah get a pump and some more fuel that will hold you over for a while.

 

My single walbro held good to close to 400whp on e85 on 1050cc injectors, plus the are cheap you can find some for as low at 75 bucks from guys

 

Your gonna need a 255 and some 750cc injectors should help also

 

thats legit, i heard to much that they fail though more commonly then other pumps so i stayed away but that doesnt mean it doesnt work for everyone, nice numbers

 

Not many options are available for the fuel pump. Most users have had them for many years including myself.

 

Ive been running pretty much the same mods on a walbro 255 for almost 2 years making 337 at the wheels on my ix with zero issues. There a great pump and really affordable!

 

just picked up the fuel pump
any ideas what kind of numbers i would be making with those mods on an evo 8

 

315 on a dynojet

 

On my 255 and greddy 720's i made 310 stock on a stock 9.8 turbo @ 24 psi

 

03 Evo 8 here

Stock Turbo @ 24lbs
MBC
Walbro 255
Stock Injectors
Stock FMIC
ETS LICP

I made 274whp on a dynojet with a conservative tune

 

You should be able to make 279-315 hp. Get cams and a tune...