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hi peeps just wondering if i should gap my new sparks to 0.8 or 0.65 im runnin 12psi on my stock turbo wid turb bak exhaust intercooler should be comin in the next 2 weeks (hopefully depending on cash), ive heard that if i gap them at 0.65 i might missfire more coz of gap being too small thus not sparking unless im runnin high boost(eg 18psi)??? is this true and what gap size would you's recomend???

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https://www.sau.com.au/forums/topic/135316-sparks/
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0.65 is a really small gap. the smaller your gap becomes the easier it is for your ignition system to cope with higher cylinder pressures (more boost), but the smaller the gap the less evenly it ignites the mixture.

Personally I wouldn't run less than 0.8 - if i need to gap my plugs further than that it's clear i should be upgrading my ignition system instead.

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https://www.sau.com.au/forums/topic/135316-sparks/#findComment-2517033
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