fuel pressure regulator question (REPOST)

[ralexander03@snet.net (Rick Alexander)]

I didn't respond because I don't have a clue.

Rick Alexander
http://www.brubakerbox.com
http://clubs.hemmings.com/hams/
http://clubs.hemmings.com/vwsrus/

----- Original Message -----
From: "Vince Royer" <vince@performancecarstereo.com>
To: "Scirocco List" <scirocco-l@scirocco.org>
Sent: Wednesday, September 11, 2002 5:44 PM
Subject: fuel pressure regulator question (REPOST)


> hmmm, nobody answered.  Let's try again in case anybody missed it.
>
> Hey guys
>
> 1)  Ok so I've stumbled across these 'instructions' on how to turn our
fuel
> pressure regulators into adjustable ones. It's really quite simple.
> Basically you alter the voltage of the input wire of the fuel regulator
with
> a dash mounted rheostat, which in turn alters the control pressure. You
can
> then monitor your mixture with an exhaust gas temperature gauge. Seems
> simple enough to setup.  My question is rather about how the pressure
> regulator works from the factory.  Does it work off of heat from the
block,
> or a signal from the wire?  The instructions say to re-mount the regulator
> somewhere else, away from the heat of the block.  Will the car still warm
up
> well by itself without me having to touch the knob?  Or am I going to have
> to constantly adjust the knob for the correct mixture.  I'd like to be
able
> to just set it and leave it, just like it is now.  It sure would be cool
to
> be able to crank it up for a quick burst of power, or dial it a little
lean
> on the freeway to save even more on gas. I just want to make sure it won't
> turn into a pain in the ass.
>
> 2)  So if I'm making my regulator adjustable, would I then benefit from
> switching it to a bigger model, like from a porsche or something?  That
way
> I could leave myself some room, fuel-wise, for future mods.  Any bosch 2
> wire pressure regulator should work with the above system, and I should be
> able to dial in the right control pressure for my motor. Any thoughts /
part
> numbers on bigger regulators?
>
> 3)  I guess this relates a little to the operation of the full throttle
> switch on the later cars.  (I have an '82)  I am guessing that when the
full
> throttle switch is activated, the control pressure is increased a little
to
> richen the mixture. Is this correct?  Could I hook up a full throttle
switch
> to activate the cold-start injector for the same effect?
>
> TIA
>
> Vince
>
>
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