Has anyone heard of these coils? What do you think? I searched the internet to look at prices to find one but didnt see any, do you know where to find one? Please see article below...

There is one new approach in coils which might be given a 9 rating. Manufactured by several companies, it goes by various trade names, such as Auto-Output, Demand Output, Energy Coil, Ultra Coil, or Variable Magnetic. They use a new approach which can make them quite effective in inductive-type ignition systems. Since the number of turns on both the primary and secondary are fixed and permanent, and since the magnetism is determined by the number of turns and the permeability of the core, these special coils change their permeability automatically in response to the engine's needs! In effect, the core gives up more energy (magnetism) as the plugs foul and also as rpm increase. This holds the output voltage at arc-over under all engine conditions and yet develops ample spark current at all ranges of rpm, even with plugs which are worn and fouled (fouled to a point; obviously if they foul badly enough, lightning, or even a computer-controlled ignition, couldn't get a spark). Why not call variable magnetic coils a 10? There are two reasons. First, it doesn't let you open your plug gaps to the full 0.100 in., which would be ideal. However, it does let you increase the gap by about 30% over any other coil. This should lead to an 8 to 11% improvement in fuel efficiency. Second, we want to see what other new and inventive ideas come up in the future and hold the 10 spot open just in case.

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1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.

Hog wash!

Unless you change the design characteristics, the coil will only fire at the voltage necessary to bridge the highest form of resistance. You may wish that 30kv would go through those fouled plugs but unless you change the system they will use less voltage than normal plugs (they are fouled and that is what fouled means - basically shorted - less resistance). There are systems that will crank the voltage up, such as capacitive discharge systems. they fire a given voltage no matter what the load. There are also multistrike controllers that fire the plug three or more times each stroke for special purposes. But unless you change the system your plugs will fire at 10kv at idle warm and need maybe as much as 18kv to fire the plug under lean loaded conditions.

Since MBs have no available voltage problems unless the coil is bad, gimics like this are just a waste of money.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

the entire article is at:
http://www.castensdynojet.com/insiders.htm

__________________
1996 E320
2000 C230 Kompressor
1988 190e 2.3 - 225K miles, owned for 7 years. I cannot say enough good things about this car. Very well built, even at 225 it ran like new.