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Thread: colder spark plugs
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11-08-2007, 04:15 PM #1Member
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PEWTER- 2002 Z/28 VERT.
colder spark plugs
Why do racers change to colder plugs when running at the strip?
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11-08-2007, 07:19 PM #2Junior Member
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Black- 1993 3000GT VR-4
I know for forced induction it keeps knocking and pre-ignition down when running high compresion ratio or boost. This is especially usefull when you are beating on the car.
I currently run 2 stages cooler. 3 stages causes my car to foul them out too easily because my tune is too rich.
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11-08-2007, 08:56 PM #3Member
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When you spray nitrous oxide you need to step down in heat ranges to help with keeping detination down. My last car I nitrous on was a 97 eclipse (I no longer own) and I ran two stages colder than stock because I was spraying anyway from 50 to 75 horsepower through that poor little 4cyl.
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