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Which Spark Plugs Are Better?


dexter morgan

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Stock plugs are good, but I've been using the Autolite Brand from the US. Get them from Auto One for around $55 for 6. They are gapped at 1.1 (BA factory gap) but I just gap them down to 0.8.

Performance has been great and I can't see any down sides. If they are good enough for NASCAR, they are good enough for me!

It should be known though that depending on your tune and Kms driven, you should probably look at changing plugs more often than what you might think. For a highly tuned car, I would be changing at least every 12 months if the car is driven regularly - personally I change mine every 6 months, but that's probably because I'm a little pedantic!

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  • 10 years later...
  • less WHY; more WOT
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but apparently a well known tuner says this ;) 

On 28/04/2010 at 9:06 PM, ratter said:

regapping iridium or platinum plugs is not recommended at any time, you should purchase a plug with the correct gap

 

ridiculous arrogance to say you can just buy the exact right plug heat range etc and also at the right gap of 0.4mm (or whatever your tight tolerance might be) haha gapping plugs has been done for decades.

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20 minutes ago, Puffwagon said:

I gapped stock gas plugs to 0.4mm and made 685awkw with stock BF series coils.

Where did they stop with the standard 0.7 gap puff

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