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Review on NGK ZFR6FIX 11 Iridium Spark Plug by David Batte

Revainrating 5 out of 5

Excellent candles!: Spark plugs

I've been using them for several years now and they impress me a lot. They dampen your engine significantly when revving up on the freeway. They don't give you any extra power because spark plugs don't, but they increase power, making you feel like you have more.

Pros
  • All right!
Cons
  • No automatic