Anybody use spark plug defoulers?

Discussion in 'Exhausts' started by Sinned83, May 6, 2014.

  1. Sinned83

    Sinned83 Well-Known Member

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    Anyone run these? Do they keep off the cel. I'm switching to an O/R pipe
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  2. kb1982

    kb1982 Active Member

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    Ive used them in a couple of vehicles when I was a teen. They were both 4 cylinders that were well past thier lifespan and oil was fouling the plugs from the bottom up. They kept the plugs nice and clean, but they move the spark plugs further out of the combustion chamber which isnt optimum for promoting good flame travel. In both my experiences with them, they seriously reduced spark plug lifespan to about 10k miles before I would start developing a miss, even on unfouled plugs, but that beat oil fouled plugs constantly. In my opinion, I would stay away from them unless you are trying to milk every last mile out of a worn out engine. Sorry I couldnt specifically answer your question though.
     
  3. Rallim

    Rallim Active Member

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    I think he's using them as 02 spacers, it's a cheap trick to try and keep the CEL off when decatting a car.
     
  4. kb1982

    kb1982 Active Member

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    Learn something new everyday. A dual use product.
     
  5. Sinned83

    Sinned83 Well-Known Member

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    Supposedly they will keep cars with catless mid pipes from throwing codes. We will find out
     
  6. 96gt4.6

    96gt4.6 Member

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    i have before, and i am currently using one on my wife's car. works great.
     
  7. Justang

    Justang Active Member

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    Have not personally used them, but heard of others using them on 02s with mostly successful results.