Spark Plugs Recommendations - Hyundai Elantra GT Turbo & Elantra GT N Performance Forum
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post #1 of 3 (permalink) Old 12-27-2019, 04:28 PM Thread Starter
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Spark Plugs Recommendations

Since I have been using a lot of octane booster, I may want to replace, clean my spark plugs. With that, does anyone know the correct gaping and or could recommend a top-notch set of spark plugs? I am approaching about 8K and since I have a tune and a custom catless exhaust, I figured I should get my hands on a new set of spark plugs.
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post #2 of 3 (permalink) Old 12-30-2019, 11:43 AM
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If you'd like to stay OEM, our 1.6T GT N-Lines use NGK IR Spark Plugs. OEM#:18849-08080. They have a gap of .7mm-.8mm per Hyundai's Tech Manual.
Sxth normally has the HKS M40/45XL Spark Plugs, however it looks like they are all sold out. The 45XLs have a Heat Range of 9 (They Run Cooler, which is "better" for Turbocharged vehicles). However the 40XLs are a Heat Range of 8, which is the same as NGK's stock plugs. E3 currently doesn't offer any plugs for our vehicles (I heard really good things about them). I'd stay away from AutoLite or Champion Spark Plugs, but if you could find Bosch or Denso.
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post #3 of 3 (permalink) Old 01-01-2020, 07:28 PM Thread Starter
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Thank you very much for the information!!!!!
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