fuel pressure regulator Options

[pabel89]

ok as most of u kno im trying to turbocharge my 7afe to a 7afte im using a walbro fuel pump and i need a fuel pressure regulator some suggested the 1:1 fuel pressure regulator but i found this universal one in ebay. let me kno what u think. and will it work ?

http://cgi.ebay.com/ebaymotors/Fuel-Pressu...sspagenameZWDVW

[Tony_the_Tiger]

1:1 is standard really... When we refer to rising rate, it also means "additional" fuel is increased as boost rises. Pretty much all factory fuel regulators are 1:1. There is no additional fueling with a 1:1 regulator.

The SX 2:1 is a true rising rate. The Cartech FMU are rising rate regulators. The engine is receiving additional fuel whenever boost increases.

A 1:1 regulator doesn't increase more fuel.. it maintains base fuel pressures when fuel is firing from the injector.

For exmaple, 45 PSI base pressure at the fuel rail minus the 20 PSI positive pressure in the intake manifold = 25 psi of fuel from the injectors due to boost fighting against the injector itself.

A 1:1 rising rate will maintain 45 psi firing out of the injector. 65 PSI rail pressure fighting against 20 PSI of manifold pressure will still result in only 45 psi exiting the injector.

Anything higher than 1:1 will be considered a true rising rate.

This post has been edited by Tony_the_Tiger: Dec 9, 2007 - 9:51 PM