James wrx

My car was mapped on a standard pump so I went and got a walbro pump fitted it and no it will not go over 4000 revs as if its holding bk now should it be mapped with the new on its as if its getting to much fuel now ?

Dale17

It will need a little tweak I think pal

QUICKSCOOB

I'm not technically minded,but my Walbro pump was fitted before mapping.I dont know if remap required or needs tweaking.I am sure you will get a reply from someone who knows

QUICKSCOOB

There you go

James wrx

I just as I thought will pump bk out till I get it mapped again thanks lads

addi monster

iTrader: (6)

You do not need a map/tweak after fitting a walbro fuel pump as it makes no difference what so ever to the fuel pressure as the reg determins this,. Have you fitted the sock on the bottom the right way around ?

Bob Rawle

Yes you do need a tweak, a more powerful pump delivers more flow into the same pressure, so you will be over fueling on boost especially if your std fuel pump was weak at the outset. The pressure reg control pressure not flow.

Good point about the fitment possible problem though thats worth double checking.

cheers

James wrx

I no wot ya mean about a tweak but the sock will only go on one way cause that little pin on the pump so they line up

addi monster

iTrader: (6)

Hows that work then bob ?

The walbro will make more fuel readily available but the reg keeps the pressure the same so it wont affect the amount fuel the injectors pass into the cylinders ect

If the pressure was upped then yes i can see this but as its not im miffed trying to understand this.

addi monster

iTrader: (6)

Some pumps have the pin at the wrong side mate so you end up having to fit them back to front if you know what i mean

classicgc8

iTrader: (4)

hi Did you get the pump from a reliable source/supplier ?

ive read theres lots of chinese made copied units around not up to the Job

James wrx

I mate a got from asp so it's good one