Thread: spark plug heat range advice
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Old 31-05-2015, 02:37 PM
chris-mr2 chris-mr2 is offline
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Join Date: Mar 2014
Location: west sussex
Posts: 47
Default Re: spark plug heat range advice
Here's a pic off my plug

Engine is a highly modified 2 litre turbo running 60/40 water meth mix at approx 15% to fuel, 23 psi boost, stand alone ecu mapped for meth etc....
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