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Trip Computer datapoint

Hi gang,

For those fortunate enough to run across a instrument cluster with trip
computer (4kq) in the junkyard, its a good idea to take the ecu with it.  I
recently installed a trip computer from a '86 4kq into my '85 4kq but the
mpg meter kept reading consistently low, like in the 16-17 mpg, when I know
I can get 24 on a bad day.  Turns out the CIS-E enrichment signal from my
ecu (p/n 811 906 264 C) was completely wrong (4-5 volts).  Fortunately, I
had also taken the ecu from the '86 as well (p/n 811 906 264 D).  Swapped
ecu's and bam, problem solved!  CIS-E signal now 2.4 to 2.8 volts and mpg
up to 35.6 mpg.  Now I can set the consumption factor switches to calculate
an accurate mpg.  Nifty $41 upgrade ($16 IC + $25 ecu).


Tony Lum  (tlum@flash.net)                  1987 5000CS Turbo Quattro
Berkeley, California, USA                    1985 4000CS Quattro
Audi Owner/Driver/Mechanic by Necessity ;^)   1980 5000S Sedan
                                               1987.5 Coupe GT (new)