Jump to content
SAU Community

Recommended Posts

When should i upgrade my fuel pump?

My mods are:

Apexi pod

CAI

FMIC

Turbo back exhaust

Boost controller set at 9psi

Power FC coming in a few weeks.

I think at the moment ill be making 165rwkw.

Will fitting lets say a walbro 255L jobbie increase the pressure to my injectors?

I have to change the voltage too dont i?

CHEERS

Link to comment
https://www.sau.com.au/forums/topic/149938-when-should-i-upgrade-my-fuel-pump/
Share on other sites

mate walbro is bolt in replacement and very cheap to ad!... my fuel pump failed and cost me a motor. for the price of say 200 odd its well worth it and eventualy your gona need it. if you boost it i would ad a larger volume pump

talking from personal experience, at the same stage as u i had to change my fuel pump as it was on the brink of dying at that power level. Ive got a walbro, and it seems to be doing the job. either that or u can go for bosch 044 or 040. But defineitly if ur going to tune ur pfc soon, do the pump before this. No need for reg or injectors yet...and what ryan said :D

Edited by moonus
talking from personal experience, at the same stage as u i had to change my fuel pump as it was on the brink of dying at that power level. Ive got a walbro, and it seems to be doing the job. either that or u can go for bosch 044 or 040. But defineitly if ur going to tune ur pfc soon, do the pump before this. No need for reg or injectors yet...and what ryan said :D

The walbro ones are good for 300rwkw arnt they?

See the FAQ/DIY section, there is a thread there showing you how. Up till 200rwkw I'd say with a new walbro you'd be OK without it. but after this you should think about doing the mod.

See the FAQ/DIY section, there is a thread there showing you how. Up till 200rwkw I'd say with a new walbro you'd be OK without it. but after this you should think about doing the mod.

Thanks mate

Do i need to change the voltage on the pump to a higher voltage?

If your gonna upgrade then dont worry about the voltage relay. It's just a neat trick for people who cant afford to upgrade their standard pump

You should upgrade the voltage line, stock or aftermarket pump IMO.

The one problem most people have when installing a bigger pump, is it does not flow the fuel thats required/specified.

The reason being is that people use the factory wiring loom for the fuel pump, and it just doesnt let the pump see the power it needs.

For you "stockish" application... its no worry generally speaking.

However, later on down the track (6-12-18months) if you change turbo and suddenly run out of fuel... you wont remember that you didnt upgrade the volts back when you did the pump, which could turn into a pain trying to work it out :laugh:

Hence i would say just get it over and done with now and save time later... but thats just what i would do

Also that Walbro will not support 300rwkw. I would not go over 240rwkw.

I had about 250 odd and pulled the return line off to see how much was flowing back to the tank when revving hard on the dyno. The flow completely stopped!

You should upgrade the voltage line, stock or aftermarket pump IMO.

The one problem most people have when installing a bigger pump, is it does not flow the fuel thats required/specified.

The reason being is that people use the factory wiring loom for the fuel pump, and it just doesnt let the pump see the power it needs.

For you "stockish" application... its no worry generally speaking.

However, later on down the track (6-12-18months) if you change turbo and suddenly run out of fuel... you wont remember that you didnt upgrade the volts back when you did the pump, which could turn into a pain trying to work it out :)

Hence i would say just get it over and done with now and save time later... but thats just what i would do

I hear what your saying........I guess I assumed that only an idiot would buy a 250KW pump for a 250KW application. Sorry for assuming

You should upgrade the voltage line, stock or aftermarket pump IMO.

The one problem most people have when installing a bigger pump, is it does not flow the fuel thats required/specified.

The reason being is that people use the factory wiring loom for the fuel pump, and it just doesnt let the pump see the power it needs.

For you "stockish" application... its no worry generally speaking.

However, later on down the track (6-12-18months) if you change turbo and suddenly run out of fuel... you wont remember that you didnt upgrade the volts back when you did the pump, which could turn into a pain trying to work it out :)

Hence i would say just get it over and done with now and save time later... but thats just what i would do

I'm letting my mechanic install my pump very soon, it's a bosch 040, do I just tell him to upgrade the voltage line also, or do i need to buy some specific wires/parts etc?

Read the FAQ, its not a case of upgrading the line [yes the mod is an upgrade, but the stock line remains the same]. What you are doing is supplying a direct voltage feed to the pump via a relay. You are using the stock wire as an on/off signal carrier.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...