when i stage my car how can i upgrade the fuel pump and can you change the regulator

 

how can no one know help i dont want to blow my car up ,
bump
bump
bump

 

why would you need to change the fuel pump? It's a fine pump for at least 350whp.

 

see thank you that is what i was looking for if we could i would up your rep , but what about fuel tuning im used to adjusting a fuel regulatgor , what about that

 

you dont tune with a fuel regulator, you trune with the pcm. what an adjustable regualtor is good for is if your injector duty cycle is getting on the high side, you can crank a couple more pounds fuel pressure in and tune the duty cycle down.

 

i'd be more worried about your fuel rail that looks like a straw then using a fuel regulator

 

can u upgrade our fuel rails

 

Walbro GSS342 255 LPH
Aeromotive 30-70 psi pressure regulator
used cavalier fuel rail tapped for return-style fuel system
fittings and fuel line

 

what yr cavi rail did u use? and is the inside dia. bigger than ours.........also do you have pics

 

pics would be great

 

don't have pics. I can tell you that the Walbro GSS342 255 LPH is longer than the stock. It does not fit the module inside the tank. You have to take out the intank stock regulator. Today I set up the regulator on a dyno
@3rd 250 WHP/227 TQ
@4th 235WHP/215 TQ

 

jose, got any pics of the install process?

 

Sorry guys. Don't have pictures. But I'll post pictures of the regulator under the hood, fuel lines on friday. Everything was done in 1 day. So, It was very difficult to take pictures (don't have a camera though, planning to buying one this friday @ 5:00AM)

I can write a process and soon a How to, here goes.

Parts needed
1. Walbro GSS342 - long than stock fuel pump
2. Aeromotive A1000-6 Part# 13109 regulates from 30-70psi
3. Fuel lines (20 -25ft)
4. fittings (-6AN)

Step 1
Take out the tank. Several bolts need to be unscrewed. Try to have an almost empty tank. It'll weight less.

Step 2
Take out the module inside the tank. Be careful to take out the cap where the fuel pump is located. It has like 4 clips. Use a philips screw driver.

Step 3
Take the fuel pump out. Take out the in-tank regulator.

Step 4
Insert Walbro GSS342. Warning, this fuel pump does not fit in the location where to stock pump is located. My mechanic tied firmly with 3 straps.

Step 5
Replace one of the fuel lines that goes into the tank with a "breeder" fuel line. This one goes from the tank to the bottom part of the regulator. You gotta be extremely careful here, try not to break the plastic gas input.

Step 6
Installed regulator. You'll see how mine is installed on friday.

Step 7
Here you got two choices. Either buy a 2002 Ecotec fuel rail, which is already tapped, or tapped the stock fuel rail, that's what I did. Connect a fuel line from the side of the regulator to where the fuel rail is tapped. You'll know where to tapped because the fuel rail the LSJ uses is the same as the cavalier except the LSJ's is blocked. Drill and connect fitting.

Step 8 Verify for leaks and connect vacuum hose. You have to get a T, cut one of the vacuum lines and install.

Step 9 Start the car. Do not start it right way. Wait until the pump fills the fuel line. You'll here a small whine and when the fuel pump stops. Remember, you have to do this everytime you start the car. The regulator does not hold gas in the lines like the intank regulator.

Step 10 Use a wideband to setup the fuel pressure. Set the pressure. Try to set it for 40-41 psi. At vacuum should be 50-51psi.

I'll have photos on friday. After installing a fujita CAI and the return style fuel system, from 224WHP, now

@3rd 250WHP/227TQ
@4th 253WHP/215TQ

Step 10 Set the pressure. Try to set it for 40-41 psi. At vacuum should be 50-51psi.