How Do I Find a Colder or Hotter Plug?
Each spark plug has a unique heat range. How can you find a plug that is a hotter or colder heat range?...
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Can I Use Platinum, Iridium or Ruthenium Plugs with Nitrous Injection?
Iridium - yes. Platinum - no. Ruthenium - maybe...
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How Long Do Denso Iridium Plugs Last?
Denso Iridium Power plugs have a recommended replacement interval of 30,000 miles, while their long-life iridium plugs can last up to 120,000 miles.
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What Denso Iridium Plugs Are Available in the US?
Denso's Iridium TT, Iridium Power, Iridium Racing Series are available in the US, as well as Denso's Long-Life Iridium Plugs.
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What are Denso Twin-Tip (TT) Plugs?
Denso's Twin-Tip Technology literally features two "tips"...
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Wasted Spark Ignition Systems
Does a wasted spark ignition system require special spark plugs?
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