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#125711 - 20th Jan 2005 4:07pm power boost valve
Cali_16v Offline
Wiki Guide

Registered: 17th May 2004
Posts: 6261
Loc: Birkenhead
Good or bad?
Easy to fit?
Worth the money?

Give my your opinion.

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#125712 - 20th Jan 2005 4:16pm Re: power boost valve
StuyMac Offline

Wiki Master

Registered: 24th Nov 2003
Posts: 12002
Loc: Wirralshire
Well worth the money on a valver engine mate smile

Guy I used to know (not seen him for a while) fits them to Vauxhall Valver motors he fits in rally cars, Exhaust, filter, a little head work and one of those, plus a set up on the RR normally get almost 200 gee gee's laugh

**Must be set up correctly though**

What If There Were No Hypothetical Questions?

#125713 - 20th Jan 2005 5:05pm Re: power boost valve
Scooby Offline
Forum Veteran

Registered: 9th Nov 2003
Posts: 5327
Loc: Birkenhead, Wirral.
A power boost valve simply alows you to adjust the fuel pressure going to your fuel injectors....

More Fuel Pressure means more fuel getting to the engine happy

I would recommend to have a fuel pressure gauge fitted inside your car so you can asses the fuel pressure whilst driving as it is different to the fuel pressure at idle.

Maverick has one fitted to his Civic and as far as i know he is happy with it happy

  • 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:-

instant throttle response

removal of performance flat spots

faster acceleration

extra engine performance

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.

#125714 - 20th Jan 2005 6:35pm Re: power boost valve
Big AL Offline

Registered: 22nd Nov 2004
Posts: 25
Loc: Wrexham
they are best if you get them set up on a rolling road, or you could lose power if you just bolt it on and start opening it out.

#125715 - 24th Jan 2005 12:48am Re: power boost valve
maverick Offline

Registered: 11th Nov 2003
Posts: 751
Loc: wallasey
Yes I am happy will the power boost valve. With the valve the car responds better and has a better acceleration. It is best to get it tuned, because it take s ages for you to find the best point yourself...


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