Re: [TECH] Audi 5K vs 4K throttle body

["Dave Ewing" <rabbit16v@prodigy.net>]

> Dave Ewing wrote:
> > <snip>
> > Dave
> >
> > I make most of my own performance stuff and it works better usually!!
> >
>
> Want to point out, for our real early VW folk, that the throttle bodies
> on the 70's era car had a restrictor placed in the venturi opening.
>
> Remove the plastic S pipe and take a look inside the throttle, you might
> see what looks like a metal doughnut in there reducing the diameter of
> the passageway.
>
> It is held in with a pin or dowel which you can drive out with a punch.
>
> Relevance: My 1977 Mk1 had one of these, removing made a measurable
> difference on the ol' butt-dyno.
>
> hth,
> TBerk

This is true, but you realize that the later throttle body is still better
than the early one.  I get your point though, yankin' the donut is even a
cheaper mod than swappin' the throttle body!!

Dave


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