Rising rate fuel pressure regulator
Bob Wooten
r71chevy at earthlink.net
Sat Mar 10 22:20:48 GMT 2001
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Tanx Mark,
I guess this is another marketing embellishment by the blower mfg's trying
to pedal their stuff. this is why I network, there are things that work
well enough to serve their purpose & there are things that work right. most
profitable manufacturers make things that work work well enough to serve
their purpose (My company is one of them), & it is not until you talk with
the real pros (the people that work on them that have nothing to gain but
the use of this item that you find the truth.
thanks again.
BW
-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Mark S. Riley
Sent: Saturday, March 10, 2001 5:49 AM
To: diy_efi at diy-efi.org
Subject: Re: Rising rate fuel pressure regulator
Most fmu's are not linear in fuel delivery and can cause significant fuel
curve deviation, usually extremely rich. They are included in the blower,
turbo kits as a cheap, effective way to keep the customer from calling and
complaining that the engine blew up on the test drive. Corky Bell's Super
FMU is more adjustable than about any of the others that I have seen from
around the world. It usually takes more work to get an FMU to deliver an
acceptable fuel curve than it does to dial in the correct curve with
injectors large enough to do the job correctly. However, there are a lot of
FMU's in use. And until the owners dyno and check the fuel air ratio they
are happy, cause it doesn't blow up when they mash it. But they work for the
people who don't have access to do it any different. Makes blower and turbo
kits saleable where otherwise the libality issues would prevent their sale
except to the select few. Pick your poison. later, Mark Riley
----- Original Message -----
From: Bob Wooten
To: diy_efi at diy-efi.org
Sent: Saturday, March 10, 2001 1:20 AM
Subject: RE: Rising rate fuel pressure regulator
I have been looking into a blower for my car & most of the mfg's suggest
a FMU (Fuel Management Unit) when I asked specifically how it worked they
said that it is a device that goes in the return line off of your fuel rail.
as Manifold pressure goes up it restricts more. sounds to me like a Back
Pressure regulator that has the sense line going somewhere other than the
input side. most of them are adjustable & the better ones are apparently
pretty linear. this might be an accurate way to do what you are trying to
do. I talked with techs @ Paxton, ATI, & Vortech & they all have the "same"
thing. there are a ton of them on the fox bodied rustangs here in Southern
California & I guess they serve their purpose. I would be willing to be
that a bunch of the turbo guys have them as well.
Bob Wooten
http://www.procharger.com , http://www.paxtonauto.com/ ,
http://www.vortechsuperchargers.com/welcome/
-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Hugh
Sent: Friday, March 09, 2001 8:37 AM
To: diy_efi at diy-efi.org
Cc: Scott Flanagan
Subject: Rising rate fuel pressure regulator
Scott Flanagan mentioned he was trying to map out a rising rate fuel
pressure regulator.
I am also looking for a rising rate regulator that reacts to turbo
boost.
All the turbo fuel pressure regulators I have seen, raise fuel
pressure at a rate equal to the amount of boost.
I would like to find a fuel pressure regulator that gives something
like 2 : 1 to give around 75 / 90 psi at 20 psi boost.
The aim is to bypass the need to fit larger injectors when increasing
the power output of the engine and also the standard injectors will allow
the car to idle better.
I also want to fit a fuel pressure sensor linked into the ECU to keep
an eye on fuel pressure.
Hugh
++44 1224 209 592 home
++44 7980 443 803 mobile
++44 1224 312 668 fax
hugh at sol.co.uk
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<BODY bgColor=3D#ffffff>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D060301822-10032001>Tanx=20
Mark,</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D060301822-10032001></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D060301822-10032001>I=20
guess this is another marketing embellishment by the blower mfg's trying =
to=20
pedal their stuff. this is why I network, there are things that=20
work well enough to serve their purpose & there are things that =
work=20
right. most profitable manufacturers make things that work work =
well=20
enough to serve their purpose (My company is one of them), & it is =
not until=20
you talk with the real pros (the people that work on them that have =
nothing to=20
gain but the use of this item that you find the =
truth.</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D060301822-10032001></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D060301822-10032001>thanks=20
again.</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D060301822-10032001>BW</SPAN></FONT></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV align=3Dleft class=3DOutlookMessageHeader dir=3Dltr><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> =
owner-diy_efi at diy-efi.org=20
[mailto:owner-diy_efi at diy-efi.org]<B>On Behalf Of </B>Mark S.=20
Riley<BR><B>Sent:</B> Saturday, March 10, 2001 5:49 AM<BR><B>To:</B>=20
diy_efi at diy-efi.org<BR><B>Subject:</B> Re: Rising rate fuel pressure=20
regulator<BR><BR></DIV></FONT>
<DIV><FONT face=3DArial size=3D2>Most fmu's are not linear in fuel =
delivery and=20
can cause significant fuel curve deviation, usually extremely rich. =
They are=20
included in the blower, turbo kits as a cheap, effective way to =
keep the=20
customer from calling and complaining that the engine blew up on =
the test=20
drive. Corky Bell's Super FMU is more adjustable than about any of the =
others=20
that I have seen from around the world. It usually takes more work to =
get an=20
FMU to deliver an acceptable fuel curve than it does to =
dial in the=20
correct curve with injectors large enough to do the job correctly. =
However,=20
there are a lot of FMU's in use. And until the owners dyno and check =
the fuel=20
air ratio they are happy, cause it doesn't blow up when they mash =
it. But=20
they work for the people who don't have access to do it any different. =
Makes=20
blower and turbo kits saleable where otherwise the libality issues =
would=20
prevent their sale except to the select few. Pick your poison. later, =
Mark=20
Riley</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; =
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:r71chevy at earthlink.net" =
title=3Dr71chevy at earthlink.net>Bob=20
Wooten</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A=20
href=3D"mailto:diy_efi at diy-efi.org"=20
title=3Ddiy_efi at diy-efi.org>diy_efi at diy-efi.org</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, March 10, =
2001 1:20=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: Rising rate fuel =
pressure=20
regulator</DIV>
<DIV><BR></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D370361406-10032001>I=20
have been looking into a blower for my car & most of the mfg's =
suggest a=20
FMU (Fuel Management Unit) when I asked specifically how it =
worked=20
they said that it is a device that goes in the return line off of =
your fuel=20
rail. as Manifold pressure goes up it restricts more. =
sounds to=20
me like a Back Pressure regulator that has the sense line going =
somewhere=20
other than the input side. most of them are adjustable & =
the=20
better ones are apparently pretty linear. this might be an =
accurate=20
way to do what you are trying to do. I talked with techs @ =
Paxton,=20
ATI, & Vortech & they all have the "same" thing. there =
are a=20
ton of them on the fox bodied rustangs here in Southern California =
& I=20
guess they serve their purpose. I would be willing to be that =
a bunch=20
of the turbo guys have them as well. </SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D370361406-10032001></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D370361406-10032001>Bob Wooten</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D370361406-10032001></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D370361406-10032001></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN =
class=3D370361406-10032001><A=20
href=3D"http://www.procharger.com">http://www.procharger.com</A> , =
<A=20
=
href=3D"http://www.paxtonauto.com/">http://www.paxtonauto.com/</A> ,=
<A=20
=
href=3D"http://www.vortechsuperchargers.com/welcome/">http://www.vortechs=
uperchargers.com/welcome/</A></SPAN></FONT></DIV>
<BLOCKQUOTE style=3D"MARGIN-RIGHT: 0px">
<DIV align=3Dleft class=3DOutlookMessageHeader dir=3Dltr><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B>=20
owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]<B>On =
Behalf=20
Of </B>Hugh<BR><B>Sent:</B> Friday, March 09, 2001 8:37 =
AM<BR><B>To:</B>=20
diy_efi at diy-efi.org<BR><B>Cc:</B> Scott =
Flanagan<BR><B>Subject:</B> Rising=20
rate fuel pressure regulator<BR><BR></DIV></FONT>
<DIV><FONT face=3DVerdana size=3D2>Scott Flanagan mentioned he was =
trying to=20
map out a rising rate fuel pressure regulator.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>I am also looking for a rising =
rate=20
regulator that reacts to turbo boost.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>All the turbo fuel pressure =
regulators I=20
have seen, raise fuel pressure at a rate equal to the =
amount of=20
boost. </FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>I would like to find a fuel =
pressure=20
regulator that gives something like 2 : 1 to give =
around 75 / 90=20
psi at 20 psi boost.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>The aim is to bypass the need =
to fit larger=20
injectors when increasing the power output of the engine and also =
the=20
standard injectors will allow the car to idle better.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>I also want to fit a fuel =
pressure sensor=20
linked into the ECU to keep an eye on fuel pressure.</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>Hugh </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DVerdana size=3D2>++44 1224 209 592 =
home</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>++44 7980 443 803 =
mobile</FONT></DIV>
<DIV><FONT face=3DVerdana size=3D2></FONT> </DIV>
<DIV><FONT face=3DVerdana size=3D2>++44 1224 312 668 =
fax</FONT></DIV>
<DIV> </DIV><FONT face=3DVerdana size=3D2>
<DIV><BR><A =
href=3D"mailto:hugh at sol.co.uk">hugh at sol.co.uk</A></DIV>
<DIV> </DIV>
=
<DIV><BR></FONT> </DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY=
></HTML>
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