Timmerman "Shrapnnel-Knobben" mod et. al.

[Robert Myers]

At 02:08 PM 10/18/00, Swann, Benjamin R. (BSWANN) wrote:


>Steve,
>
>Paul supplied me with what may be a more recent, or simplified version of
>the Knob mod.  It is simply a resistor, nothing more.  He may have done away
>with the zener due to the lack of any overboost protection.

I repeat!  Paul NEVER used a zener as part of his mod.  Others, including 
Superchips, did but not Paul.

>The 470 ohm
>resistor gives plenty of boost headroom, almost too much, so there really is
>no need I can see for the diode.
>
> >... Paul's mod to the ECU was a resistor/zener mod, not simply a resistor.
>The zener clamps the input to the A/D so that the ECU never thinks it sees a
>pressure above that point and thus does not activate the overboost shutdown
>mechanism.<Steve Buchholz
>San Jose, CA (USA)><
>
>Quattrophile,
>
>With the input of several listers, I am in the process of compiling a
>compendium of boost mods, including these.  I will post the link when I
>finish.  I will have some pictures of the "Shrapnnel-Knobben" mod as well,
>with diagrams.
>
>If you wish to contribute information on chipping, boosting, sources and
>suppliers, please do.
>
>Regards,
>
>Ben
>
>
>
>
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Bob
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