CIS-E fuel modification @ WOT

[Tony Lum <tlum@flash.net>]

Hi gang!

Please excuse lame ASCII art, but here is my proposed change to CIS-E using
existing WOT switch, one 12 volt SPDT relay and a resistor TBD (to be
determined).  The resistor would be picked based on desired enrichment at
WOT and should have zero effect at cruise.

WARNING: use this circuit at your own risk-its a cerebral/experimental
excercise for right now.  Bruce Bell is in the process of trying this out
to see if there are any potential gains.

Comments invited :^)

Standard CIS-E wiring
---------------------

              oem temp sensor     
to ecu   <--------\/\/\/\--------|
                     R1          |
to ecu   <-----------------------|


Proposed Experimental Wiring
----------------------------
                                  |-  Contents of "Black Box"  -|
                                    aux enrichment relay (NC contacts!)
                                              
              oem temp sensor            |-----/0------|
                                         |  K1 (SPDT)  | 
to ecu   <--------\/\/\/\--------X<------0---\/\/\/\---|
                     R1                        R2      |  
                                              "FS"     |
to ecu   <-----------------------X<--------------------|
                                   

from WOT <-------------------------------------)||
                                               )||
                                               )|| K1's 12V coil
to GND   <-------------------------------------)||

"FS" = "field selected" to bump differential pressure regulator current up.
 Use a rheostat for R2 for the "tuner" setup.  In normal use the NC
contacts short out the enrichment resistor and ecu sees normal temp.
resistance.

Regards,

-Tony
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Tony Lum                                        1987 5000CS Turbo Quattro
Berkeley, California, U.S.A.                	1985 4000CS Quattro
Audi Owner/Driver/Mechanic by Necessity ;^)	1980 5000S  Sedan
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