What Does Fuel Regulator Do?

[nismoskyline32]

hi there,

i have installed a high flow fuel pump.(walbro) and it consume more fuel than b4 of course.

does a fuel regulator help a bit?

thx champ

[Craved]

all skylines ahve fuel pressure regulators as standard

installing a high flowing fuel pump should not increase the fuel sonsumption unless the old one wasn't flowing enough at high rpm and running lean.

[nismoskyline32]

thx

but is a ajustable fuel regulator help?

[mad082]

not really. put a think bit of carpet under the accelerator, then you can't floor it as much.

[R31Nismoid]

an FPR will not aint in economy

tuning and controlling the right foot does

[Warpspeed]

That all assumes the standard fuel pressure regulator can still control the fuel rail pressure with a much more powerful fuel pump fitted.

But what if the regulator and return line to the tank are now too small to cope with the vastly extra fuel volume that must be bypassed ? Suppose the fuel rail pressure is now much higher than it was before, would not the engine run rich ?

Best measure fuel rail pressure and see if it is what it is supposed to be before making any quick judgments.