Stock fuel injection / 034 EFI

[JShadzi at aol.com]

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[ Picked text/plain from multipart/alternative ]
Zsolt,

Adding more fuel to a CIS fuel system, externally, is quite simple.  Getting
the right, properly metered amount is more difficult.  Because you reference
adding fuel to the CIS system, I assume you're talking about a supplementary
controller.  My 034 supplementary controller, and most others out there, work
in much the same way.  Differing input signals are recieved by the
controller, translated into voltage pulses that inturn open and close
additional EFI injectors placed in the intake system.

For example, the 034efi controller takes a vacuum MAP and RPM signal.  Using
these two signals, and interpolated input from the user, very precise fueling
can be accomplised at any given RPM and manifold pressure point.  This fuel
is simple ingested into the engine along with the fuel deliverd by the CIS
system, and in turn, if a motor needs it, extra fuel can be easily and
accurately delivered.  The CIS system is blind for the most part, it won't
know or care that there is additional fuel being delivered, and will continue
to work in closed loop programming effectively.

HTH,
Javad

In a message dated 6/11/2002 1:08:32 PM Pacific Daylight Time,
zsolt1 at telusplanet.net writes:


>  was talking to an Audi mechanic yesterday, and he said that the due to
> the mechanical fuel injection system in the 5000 tq, a controller alone
> could not provide more fuel for the engine. He said he has seen where
> they used extra fuel from the cold start system but that is the extent
> of tuneability. (is there such word?)
>
> I was hoping somebody could explain how the 034 EFI works, and how it
> ties in with the stock system. What has to be changed, and how it has to
> be tuned etc.
>
>