FW: [W126 Coupe] functional spoiler?

[Shayegan, Richard]

Just to check, that 750 ohm thing is the thing with the jumpers that you
can set differently for different octanes, right? If so, IIRC the 380
and 500 don't have it. Is there any way to advance timing on these cars
other than a woodruff key? Oh, and where can I get this bosch book?
Thanks,
Richard

________________________________________
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Dan Landiss
Sent: Sunday, March 20, 2005 5:35 PM
To: Mercedes Coupes Mailing Lists
Subject: Re: FW: [W126 Coupe] functional spoiler?

Shayegan, Richard wrote: 
And isn't there even less on the CIS-E (which is what AFAIK the 500
has)?
  
I thought the 500 had a memory-mapped mixture control (chip)?

Couldn't the same be achieved by turning the fuel mixture adjustment a
little clockwise?
  
No, that would set idle but when the system goes closed-loop, the O2
sensor sets the ultimate mixture. You would have to somehow put a small
voltage in series with the sensor to make the mixture look a couple of
tenths (air/fuel ratio) too lean, and the FI would compensate by going a
little richer.

There is no 750-om spark advance control resistor on the CIS-E though,
right? AFAIK the only way to free up more power from the CIS-E cars for
close to free is the advance the timing like 2 degrees with a woodruff
key, right?
  
I have no idea, learning what my own system does was hard enough. Get
the Bosch book and see what the 500 uses, and how it works. I thought it
used a memory-mapped protocol (see above).

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