c6matt

iTrader: (1)

I have a stock longblock ls1 with a tvs2300 and 60# injectors.. I am about to turn up the boost to 10psi.. I currently have a walbro 255 in-tank with a boost refrenced aremotive FPR (mounted near the tank) and -6 up to the rail. I am expecting 500+ at the wheels. Will the 255 keep up? (4 bar/58 psi) Should I add a second walbo? boost-a-pump? Or will what I have keep up?

6techniques

iTrader: (7)

With that power youll definitely be in the limit zone for the pump. You should add a secondary 255 just for insurance and the fact that you will want more power in the future once you get used to that power level.

c6matt

iTrader: (1)

How would I wire up the 2nd pump? just piggyback off the 1st one and run it all the time? I have a 10ga feed to the first pump so the wiring should handle it. The 2nd 255 would be cheaper than the boost-a-pump...

Chicago TDP

iTrader: (3)

Google it. That is what I did and found a lot of good info.

I am going through what you are going right now as well; looking to make 500-600 but I am sure that I will want to push my car a little.

Better off doing it right and not leaning you engine out.

From what I found, you need to run another set of wires, a relay and a HOBS switch to turn on the second pump. Also, you will more then likely need to make sure you have a -8 min feed line and -6 return.

What tank set-up do you have?

c6matt

iTrader: (1)

I am running a spectra tank..

KILLER-LS1

iTrader: (18)

Or just run the new Aeromotive "stealth 340" pump. Same size and shape as a walbro, but is good for over 600hp

hellbents10

iTrader: (10)

A 255 is just fine up to almost 600rwhp. My daily driver makes 490rwhp with a 255 on E85 with a return style system. 21k miles like this.

383camaroz28

iTrader: (22)

my tuner told me to swap out my walbro 255 for a racetronix 255,

where can i buy a aero 340 stealth?

XtremeDime

iTrader: (16)

I dont know why he would tell you that, they both flow 255lph...

Im running 2 255s, all the time. I used a starter solenoid; ran 8 gauge to the battery, 8 gauge to ground and used the existing relay wire as the trigger.

383camaroz28

iTrader: (22)

im just gonna get the 340 stealth i think

_Adrenaline_

iTrader: (4)

EDIT: I fail at reading.

dreamls1

iTrader: (25)

We ran a 255 at 15psi and 700whp on a mustang dyno. Your good

Grr

iTrader: (2)

FALSE, it flows 340lph, hence the name

A single walbro will work fine with 8-10psi, I ran 12 on my 6.0L with a big *** turbo, just set the base pressure at 38psi and let the injectors work

MasterTomos

iTrader: (15)

I thought the racetronix 255 was a walbro 255

_Adrenaline_

iTrader: (4)

Sorry i read 383camaroz28's post wrong.

My post was supposed to be a question...

6techniques

iTrader: (7)

There is a sticky by mighty mouse in the fuel section that should give you a good idea on what to do.

BLAKE 01 WS6

iTrader: (1)

Mine gave up at 562rwhp sae 7.5psi, call Lonnie he can set you up for whatever you will need

383camaroz28

iTrader: (22)

that 340 aero loooks real nice

gsxr1k2

iTrader: (6)

I would suggest you use the twin intank gss340's. There's a write up in the fuel section.

kopbait

iTrader: (1)

good luck getting the aeromotive pump b4 may...they are back ordered. im currently about to build a twin 255 setup i will post up how it goes