Re: extra fuel and rust

["Wm. Josiah Erikson" <josiah@gsinet.net>]

I can speak to the fifth injector fuel enrichment module thing. I have one on my
Rabbit GTI. The full-throttle switch activates the fifth injector through a
couple of relays that turned out to be necessary. Anyway, it gives an extra
boost at high rpm's but makes the engine bog a little at very low rpm's. I think
I'm actually delivering a little bit too much fuel- I wonder if you can make the
fifth injector open a little less by using a resistor or something. I dunno. If
you are interested, I have a schematic that I made of it in .bmp format that I
could email to you.
    -Josiah
    '84 GTI
    '86 Scirocco 8v
    '87 QSW
    http://www.gsinet.net/~josiah

matrix22 wrote:

>     Hi all!  I've been lurking for a while, just so busy this season.
> Anyway I have two questions, but first some background.
>     I have '81 with a 1.8l, no oxygen sensor, headers and larger in diameter
> than stock  made out of some non rusty material, I don't know if it's
> aluminum or stainless, I found it in the junk yard.  Air intake without the
> thermostat, k&n filter, Audi 5000 throttle body, and ported to match air
> intake manifold. So the whole air and exhaust flow is better.
>     What I want to find out is if extra fuel will give me extra horse power
> with the better air flow.  I read somewhere that the fifth injector can help
> in the fuel delivery.  The Audi throttle body has a switch on it that is
> turned on when the throttle is at max.  So I'm thinking of connecting that
> switch to the fifth injector.  So when I floor it I get max air and some
> extra fuel from the fifth injector.  Has anyone done this and is worth the
> while?  Any dangers or difficulties?
>     Also what's the best way to fix rust? Welding new metal, bondo? So that
> it would last long?  Thanks for the help
>
> Andy
>
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