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POWER BOOST VALVE
HOW DOES THE POWER BOOST VALVE WORK?
The Power Boost Valve is a high performance tuning part which replaces the original
equipment valve (fitted to the vehicle).
A range of models are available to suit a wide variety of European cars, which almost
certainly includes yours. We are continually developing new designs to expand the
number of applications.
We outline the benefits of the Power Boost Valve by drawing a comparison evaluation:
Ref: Original Equipment Fuel Pressure Control Valve
The electric fuel pump supplies fuel at a high pressure to the fuel rail and injectors,
which is then regulated by a fuel pressure control valve. Typically, the regulator
is not adjustable and is pre-set to a 3 bar maximum pressure. At idle the fuel
pressure valve reduces it by 0.5 bar approximately to 2.5 bar. When accelerating
quickly from standstill the fuel pressure increases at a proportional rate retaining a
lean fuel mixture strength as required by the E.E.C. for new vehicles. However, the
resultant effects of the standard valve produce:
lethargic throttle response
occasional drivability problems at slow traffic speeds
intermediate performance 'flat spots' when accelerating
By comparison:
Ref: Power Boost Valve (replacement)
Firstly, this valve has an adjustable fuel pressure, effected by the movement of an
adjustment screw on the crown of the unit.
New Power Boost Valves are pre-set with a maximum fuel pressure of 2.5, 3.0 or 3.5 bar,
depending on the vehicle in question, and similarly (to the original valve) the fuel
pressure is reduced by 0.5 bar approximately at idle. There the similarities end.
On acceleration from standstill the Power Boost Valve fuel pressure will increase at 1.7
times the standard rate. This will produce a healthy, strong fuel mixture strength
which will instantly improve the drivability of your vehicle, providing:-
The regulator enhances engine performance on acceleration by enriching the
mixture strength. On constant throttle and cruise conditions the valve returns to a
normal regulator function.
The Power Boost Valve is simple to install and in most instances basic fitting
instructions are provided. These units are mechanical and are considered maintenance
free.
We thank you for your interest in our products and hope that this bulletin provides you
with enough information to answer any questions when making a purchase.
COMPETITION USE ENQUIRIES
The same range of regulators will be utilised when used on a competition engine and, for
customers using competition fuel lines, a special regulator with a JIC (-6) male fitting
has been prepared should one be required. Fuel pressure adjustment can be effected
in seconds to reduce delays.
General
Assistance Information
PBV APPLICATION
LIST
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