Yah, what ever happened to the W9DC plugs? I had a set once and they were fantastic. Suddenly the parts stores around town just stopped carrying them.

I got the same answer from everyone... "Bosch has decided to phase these out"... so I went to NGK's just for the sake of having resistor-free plugs... It does pretty well now, but not the same as the original Bosch non-resistor copper plugs.

-Troy

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- - - '77 federal 280e - 222k miles
- - - '85 380se - 129k miles
- - - '07 Chevy truck
- - - '79 Datsun 280zx with '82 turbo motor
- - - Currently looking for a clean 190e with less than 160k miles.