[W126 Coupe] Fuel Ratio

[Shayegan, Richard]

I dunno, fooling around with fuel mixture I was able to drop a full
second on the 0-60 times so there is definitely power to be had. I think
with the 86 and later engines your options to eek out free power are
much more limited than the pre-86 since the pre-86 have basically
mechanical injection and the computer just adjusts timing by a constant
amount for a given engine rpm, so if I advance the base timing by 3
degrees, which I should have room to do since the car only asks for 87
and I run 93 I should be able to drop a few tenths on the 1/4 (I don't
know why I haven't gotten around to this yet, I guess because I don't
want to buy a timing light). But for the sake of checking my O2 voltage,
does anybody know what ports you use to check the O2 sensor voltage on
the CIS (no, it's not the same as the CIS-E, so Dan's guide doesn't
help).

The question isn't how can I get more power by spending gobs of money,
the question is what power can be extracted for under $100.

Richard

 

________________________________

From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of John Piekarczyk Jr
Sent: Thursday, August 25, 2005 10:09 PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] Fuel Ratio

 

I raced 2 stoke Karts for years. Leaner will make more power, but too
lean will sieze the engine. On a 4 stroke too lean will hole a piston.

 

  I would stay rich, as long as you pass emisions. On a stock engine
your not going to make a lot more HP by running it lean. But you will
ruin an engine.

 

  My 560 at 13.7 shows no CO at idle, goes like hell when I get on it.

 

  You will not gret more power,by the Lambda, you would need a hole new
program, new computor, new everything.

  

  Put a 119 in like Satish.

 

John

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