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

[Dan Landiss]

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!

-- 

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"Progress is brought about by doubt, not accord."  --John Amos Comenius, 17th century educator
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