^^ I totally agree - I wouldn't go thinking of other reasons the car isn't running. Its obviously something you've done during the tune up - so double/triple check that the car is put together correctly.

I doubt having the R (resistor) plugs in there would cause it to run this badly - I know others have had problems, but not immediate and catestrophic problems like this.

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE