Colder Spark Plugs

Discussion in 'Mechanical Problems & Technical Chat' started by Tom's Si, May 4, 2016.

  1. Tom's Si

    Tom's Si Well-Known Member

    Messages:
    163
    Location:
    Sarasota, FL
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    I've got a full bolt on NA build. I've acquired a set of NGK 1422's, the one step colder used in the Evo's. Will it hurt anything if I use them?
     
  2. webby
    • Staff
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    webby Administrator

    Messages:
    52,087
    Ngk says only use one of their colder plugs if you're 70-100hp above stock.
     
    Tom's Si likes this.
  3. Tom's Si

    Tom's Si Well-Known Member

    Messages:
    163
    Location:
    Sarasota, FL
    Vehicle Model:
    Civic Si
    Body Style:
    Coupe
    Thanks Webby.
     

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