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Model specific boards => Golf mk4 => Topic started by: Tazzy on 09 April 2012, 11:28

Title: Fuel Regulator
Post by: Tazzy on 09 April 2012, 11:28

a mate has bought me one of these for my golf as he bought 2 for his cupra and puma

http://www.ebay.co.uk/itm/UNIVERSAL-3-4-5-BAR-ADJUSTABLE-FUEL-PRESSURE-REGULATOR-/380362367151?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item588f5d20af#ht_4496wt_1037

can i fit this?
how do i fit it?
where does it go?
at what bar should it be?
how do i know what bar its at?

cheers all :)

Title: Re: Fuel Regulator
Post by: Wazzzer on 09 April 2012, 11:43

they fit in the fuel rail. Bear in mind you have no way of knowing what your fuel pressure is unless you fit a gauge

Title: Re: Fuel Regulator
Post by: nolandubholmes on 09 April 2012, 12:14

All the way out is 5 bar all the way in is 3bar so but not really needed unless ur going for decent power

Title: Re: Fuel Regulator
Post by: nolandubholmes on 09 April 2012, 12:32

reverse that ^^^^^^^^^^^^^^^ haha

Title: Re: Fuel Regulator
Post by: golf-sib on 09 April 2012, 14:07

4bar over 3bar allows a 33% increase in fuel, it sits on the fuel rail, adjusting it by hand is a bit pointless as you need a gauge. Could just buy a 4FBR 2nd hand of an audi etc...

What you aiming at achieving?

Also I tuned the hell out of one before, on max setting the car felt extremely nippy but the over fueling was crazy to the point where bore wash could of occurred, then the other problem was on idle it was pissing oil out the exhaust which is no good for the cat and it was extremely thirsty, if you want to just increase the fuel a tad I'd go down the 4FBR or adjust it with a gauge and just log the results.

Title: Re: Fuel Regulator
Post by: golf-sib on 09 April 2012, 14:24

Also remember upping the FBR won't exactly improve performance. Look at the way maps are written, they are lean in some parts and rich in others to help the turbo spool, maximise BHP or torque at particular points, by upping the fuel you may actually be making it slower or degrading performance in some parts of your RPM range and vice versa. Which is why logs will help you decide whether you are gaining anything or not.

Title: Re: Fuel Regulator
Post by: Tazzy on 09 April 2012, 15:05

thanks all, im not sure what i want to achieve really, i was given it, lol, he just bought it for me, hes good like that, lol

whats the bar on a standard set up, being a 1.8 20v non turbo?

in addition, i actually think im over fueling at the moment, need to put the middle box back on, its decatted, need to check my lambda sensor also

Title: Re: Fuel Regulator
Post by: Wazzzer on 09 April 2012, 16:15

3bar as standard, I'm still running a 3bar on 225bhp lol

Title: Re: Fuel Regulator
Post by: duckman on 09 April 2012, 16:40

Can you not just put a vr6 pressure reg instead of the standard one? Or is this not true?

Title: Re: Fuel Regulator
Post by: Wazzzer on 09 April 2012, 16:59

I find loads of 4bar FPRs in scrap yards from various cars and sell them on  :wink:

Title: Re: Fuel Regulator
Post by: Toby on 09 April 2012, 17:22

Iv got a 4 bar one that I didn't use for my mapping on
Me if it interested