Rising rate fpr(power boost valve)

[wooly350i]

Has anyone got one of these fitted to replace the standard original? If so does it sound like one of the clangers when you turn on ignition and fuel pump pressurises the line?
I need to think of an answer when people ask WTF was that!

[908glen]

Hi

Mine doesn't make any noise at all and works very well.

[Jack Valiant]

Have you got a stepper motor on your set-up? On my 500i I have a hot-wire system and a stepper motor on the plenum when I turn on the ignition the stepper motor re-cycles and opens the air valve? I can hear mine at turn on

Chris

[350zwelgje]

Mine does that after it stood for a couple of weeks or even longer. I wait for the 'wistling' noise to stop before to use the throttle for the pump to be able to build up the pressure. As well watching the oil pressure light and gauge.

The brand I have is the cheapest on the market that has divided opinions. I learned to live with it (know what I want and what I need to do to it...) and have a permanent fuel pressure gauge on it, to monitor or adjust it to my requirements! Track is different to fast road. Perhaps will invest in an improved fuel pressure regulator later, but like the rising rate aspect on my standard 3.5 flapper and yes it does do the improved accelaration trick (checked several times by changing back to the standard regulator, which I carry as a spare - just in case).

Never had funny looks or the need to explain the TVR making funny noises, it makes a lot of noise that either impresses or is hated, but will 'mask' the one under the bonnet at all times.

Rob

[Danny Hoffman]

I've had an FSE one sat in a cupboard for a couple of years, never got round to fitting it.

It came off fleebay but didn't have any fitting instructions, although it seems pretty obvious what needs to be done.

I did have a look on the web but couldn't find any instructions, does anyone have a copy they could scan me?

Seems like a few people aren't too happy with them though....

http://www.migweb.co.uk/forums/car-talk/449222-nev...

[350zwelgje]

http://www.v8engines.com/Acrobat/Powerboostvalve.p...

It feels a lot different after fitting (only for the flapper), but getting the pressure right is a bit of trail and error. Have the tools in the dash to adapt on the fly, using the all time attached pressure gauge...., for when I feel like to checking and or adjusting it.

Rob

[wooly350i]

350zwelgje said:

http://www.v8engines.com/Acrobat/Powerboostvalve.p...

It feels a lot different after fitting (only for the flapper), but getting the pressure right is a bit of trail and error. Have the tools in the dash to adapt on the fly, using the all time attached pressure gauge...., for when I feel like to checking and or adjusting it.

Rob

Just as a word of warning though mate, they don't recommend leaving the gauge fitted permanently, something to do with safety and petrol, John.

[Danny Hoffman]

Thanks Rob, but these are for the hotwore EFi, mine is a flapper. Are the instructions the same?

[Wedg1e]

wooly350i said:

Just as a word of warning though mate, they don't recommend leaving the gauge fitted permanently, something to do with safety and petrol, John.

I've had a permanently-installed pressure gauge on my car for a few years; what I have noticed is that the gauges don't last very long - I imagine due to the high-frequency pressure pulses caused by the injectors firing. Perhaps a glycerine-damped one would survive longer.

[maston]

Got an fse rising rate one on my 390, excellent

[SILICONEKID343HP]

Do you need a rising rate regulator on your setup? Does the EcU compensate for fuel inrichment or do you rely on the adjustable fuel regulator"rising rate" to do the job ?

[wooly350i]

SILICONEKID343HP said:

Do you need a rising rate regulator on your setup? Does the EcU compensate for fuel inrichment or do you rely on the adjustable fuel regulator"rising rate" to do the job ?

That I will be advised on when I can eventually track down the guy who's going to map it, when I spoke with him briefly a few weeks ago he did query it but Im assuming I can just be over compensated for fuel pressure as the dta system is programmable, still have the original one just incase its got to go back on but the original was only giving fuel rail pressure of just over 2bar with engine running where as the FSE one can go way up from that but at present ive set it at 2.5bar running, obviously the injectors can be adjusted for pulsing time length so fingers crossed he can work some magic on it.

[SILICONEKID343HP]

wooly350i said:

That I will be advised on when I can eventually track down the guy who's going to map it, when I spoke with him briefly a few weeks ago he did query it but Im assuming I can just be over compensated for fuel pressure as the dta system is programmable, still have the original one just incase its got to go back on but the original was only giving fuel rail pressure of just over 2bar with engine running where as the FSE one can go way up from that but at present ive set it at 2.5bar running, obviously the injectors can be adjusted for pulsing time length so fingers crossed he can work some magic on it.

You won`t need a rising rate regulator ,just the adjustable 1:1 linea ..If it has a thin band like this it will be 1;1 which you need .

The rising rate ones have thicker bands.

[wooly350i]

SILICONEKID343HP said:

You won`t need a rising rate regulator ,just the adjustable 1:1 linea ..If it has a thin band like this it will be 1;1 which you need .

The rising rate ones have thicker bands.

Yes its the thicker band one, you say I wont need the rising rate one but I wonder if its just overkill and could it be used anyway? John

[Transmitter Man]

I have the adjustable model from Webcon because I had read the bad reviews of the FSE's.:

http://www.webcon.co.uk/Downloads/WFR1.pdf

Phil
420 SEAc

[SILICONEKID343HP]

wooly350i said:

Yes its the thicker band one, you say I wont need the rising rate one but I wonder if its just overkill and could it be used anyway? John

Rising rate will throw the map out ,think they were designed for engine managment systems without fuel enrichment so the regulater did the job .

[AM400]

Ditched my FSE one for a Webber adjustable.

[Wedg1e]

Mine has the original adjustable (but non-rising rate) Bosch(?) one... seems to work OK, dyno air:fuel ratio graph flatter than a contour map of Lincolnshire...

[SILICONEKID343HP]

I was recommended the Maplassi from a guy at V8D,they look like the FSE but far better quality

http://www.demon-tweeks.co.uk/Product.do?method=vi...

[blitzracing]

SILICONEKID343HP said:

Rising rate will throw the map out ,think they were designed for engine managment systems without fuel enrichment so the regulater did the job .

Be careful on this one- only the 14CUX ECU has automatic fuel enrichment, the earlier 14CU, 13CU and 4CU can be used with rising rate regulators to good effect.