fuel pressure regulator

[gordyN01]

where can u buy these ? anyone bought one

[Bing]

Most places!,

FST = £80 ish

Will do most jobs

[sma01]

phone duncan @ hypertech on 01324 812212 mate, he will sort you out with one, think he has them on the shelf...

Scott

[the squiggle]

From what i have been told the New Age cars do not require a Adjustable Regulator as such because the ecu apparently controls the fuel pressure.

Good safety mod on a classic but unrequired on a New Age car.

Saved you a few pounds there......

Grant

[WUZ]

)EUC controlthe voltage to the fuel pump on a Newage ( hence controls flow rate into Injectors, and so unless your going for BIG POWER! you don't really need to fit one

[sma01]

what sort of power are you classing as "big" mate??

[fai17]

<< what sort of power are you classing as "big" mate?? >>

Yes WUZ whats big power as you've got me thinking..

[WUZ]

bigger power means 400 +.

ECU can control the fuel flow rate but if you stay with 565cc injectors (Newage STi size) then you might need to up the fuel pressure to have enough out at the top end (ie, beyond fuel pumps ability to flow enough at standard pressure).

Remember this is for 400+, less than that and you don't need a regulator. Also, upgrade the injectors to 650cc's and you won't need a regulator. You will need a remap though!

Russell

[sma01]

got 800cc power enterprise injectors on mine just now mate with a gems ecu, what sort of power would i need to get to before the need for a FPR??

while i'm on this subject, do you know if PE use a different calculation for the cc of their injectors?as i had a problem with the 650s where they were not coping with the power as well as they should have been, i then changed for the 800s and was told they are acting like 650s should have been(altho they were definitely the right ones i was sent......)

Scott

[fai17]

Thanks Wuz

Will changing to 650 injectors give you more BHP.

My spec is IHI VF35 turbo,Gruppe S header,XS Power up pipe,Meercat Snakehead downpipe + 3"decat system,APS CAI & Bosch fuel pump.And GEMS ECU

Thanks

[sma01]

peter, dont think the injectors improve the bhp directly, i will let the guys with the technical knowledge explain what they do as i will probably end up making an ar$e of it....

Scott

[the squiggle]

The larger the injector size you fit means the injectors are less stressed when nailing it t 1.5bar

My car hits 92% Injector Duty at 1.45bar on 404cc injectors to achieve a healthy Air to Fuel ratio of 11.2 - 1. If i was to fit larger injectors then it would run less duty to achieve the same Air to Fuel Ratio. If it was to fit smaller injectors then it probably exceed 100% duty cycle and the AFR would Lean out due to the injectors not being able to supply the right quantity of fuel to maintain a healthy AFR. So in essence the larger the size of injector fitted, the more boost can be fuelled correctly for. The larger injectors will also give a better margin of safety when running high boost high revs.

Grant

[fai17]

So do i need bigger injectors then??

[WUZ]

If you want over 400 bhp but less than 430, get either Bigger injectors (650cc's), or run a higher fuel pressure (with an FSE fuel reg)

Russell

[fai17]

<< If you want over 400 bhp but less than 430, get either Bigger injectors (650cc's), or run a higher fuel pressure (with an FSE fuel reg)

Russell >>

Thanks Wuz..I was getting worried there