[W126 Coupe] Fuel Requirements or How Can I Adjust 1989 560 SEC ToUse 87 Octane

[malcolm369 at comcast.net]

Hi Dan,

I've heard many times I should just remove the Reference Resistor for better performance, ie: better advance characteristics, something I've hesitated to do for some time.

Yours is a reasoned, measured evaluation of a question that has been on my mind for some time. Thanks for your input.

Cheers,    Malcolm

 -------------- Original message ----------------------
From: Dan Landiss <dan at landiss.com>
> XKEOTS at aol.com wrote:
> > Is there any way to make our 560's run or 87 octane?
> 
> There is a 750 ohm resistor (US models) inside a black plug in the 
> wiring harness up near the brake booster. It contributes to the 
> computer's decision on spark advance. For other markets, an adjustment 
> can be made as follows:
> 
> Setting 	Ohms 	Retard 	Octane
> S 	10000 	0 	98
> 2 	2400 	2 	95
> N 	1300 	4 	93
> 4 	750 	6 	91
> 5 	470 	8 	89
> 6 	220 	10 	87
> 7 	0 	
> 	
> 
> 
> But I gotta tell ya', with 470 ohms in there it is going to feel sluggish!
> 
> -- 
> 
> =-=-=-=-=-=-=-=-
> "Progress is brought about by doubt, not accord."  --John Amos Comenius, 17th 
> century educator
> =-=-=-=-=-=-=-=-
> 



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From: Dan Landiss <dan at landiss.com>
Subject: Re: [W126 Coupe] Fuel Requirements or How Can I Adjust 1989 560 SEC
	To	Use 87 Octane
Date: Thu, 27 Apr 2006 20:08:31 +0000
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