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(Thread Starter) | This is a compiled database for spark plugs who's heat range is 1 and 2 stages colder than stock. Please add your plugs and we will update this thread. Mazdaspeed Forums Spark Plug Index Database Gap size - 0.26 - 0.32 | Preferred gap is between 0.26 to 0.28 Type and Specs on DISI 2.3l Spark Plugs: 14mm; 5/8 hex; 25mm reach; projected tip; resistor plug Heat Range Conversion Chart Code: HKS 25 30 35 40 45 50 52.5 55 DENSO 16 20 22 24 27 31 32 34 NGK 5 6 7 8 9 10 10.5 11
NGK Copper Plugs LZTR4A-11 (5306) LZTR5A-13 (4306) BKR7E
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| The Following User Says Thank You to Haltech For This Useful Post: | cciepunk (12-27-2013) |
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