People have post on here in the past saying they have fitted expensive adjustable ones, and paid to have them set up on a rolling road, only to find the pressure set is the same as a 16v Calibra one at a third of the price....
I remember reading somewhere, can't remember where, about using a Fuel pressure regulator from a 2.0 Sierra, inline with the Original. Apparantley the Sierra ones are adjustable. And this works like a Cheap FSE Boost Valve.
Anyone Else read this??
the 16v or turbo one wont fit cause they bolt on to the rail where 8v is fitted on a pipe. under the back of the car between the fuel pump and filter is an adjustable pressure regulator.remove this and just join the pump to the filter with a new bit of hose. take the regulator and splice it into the return from the standard regulator and you have a free boost valve!!!
when playing with fuel pressure it is always very advisable to replace/uprate all your fuel lines as the higher pressure can burst slightly persished lines!last summer even running standard pressure the pipe carryingfuel to the rail on my d reg 323i coupe burst and the car burst into flames! i was lucky to escape slightly singed but i lost a grands worth of ice that wasn`t covered and my insurance paid peanuts i also pissed folk off cos the a7 was shut for hours! dont go the same way! caravan and campervan shops sell high pressure flame retardant braided fuel lines very cheap for some strange reason
lastly, when your going to these lengths, change your fuel filter, theyre cheap and supposed to be changed as a service item but NEVER are
i`m no 100% that the thingys function is meant to be a regulator but if u tighten the adjuster on top of it it works just like one so i`m guessing it was for adjusting pressure at factory or something like that...
the fuel pump pressure regulator is needed at the pump, is very large and very rusted!!! it only allows small adjustment around 2.5 bar anyway. i am trying to avoid obvious details like this for insurance reasons. that, and many other mods like it will invalidate your policy. a 3 bar reg is easily overlooked cos it is identical to the 2.5. i have got bored looking for one though and have decided to pay more for an adjustable one with gauge. anyone tried fitting a dash mounted pressure gauge for the fuel? **** it i will do it anyway, should be a larf.
I was thinking of putting a guage in mine.Didnt fancy the idea off having a fuel line running inside the car so i went to tweeks to see about an electric one.Feckin expensive!!!! is all i can say so i aint gona bother.