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Discussion Starter · #1 ·
We have both the Heat Range 8 & 9 plugs in stock.

We highly recommend getting a colder plug once you run our tunes. These and a handful of other NGKs are all we would run on this car.

As always, you get our great customer service and immeidate shipping when getting these from us.
We can also discount the plugs when bundling with a tune!

Thanks!

HKS M40XL Spark Plug

HKS M45 Spark Plug
 

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I'm seriously debating going with these soon.

Which of these is a replacement for stock? (I'm only running your short ram intake and soon an exhaust and your fmic)



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Discussion Starter · #4 ·
I'm seriously debating going with these soon.

Which of these is a replacement for stock? (I'm only running your short ram intake and soon an exhaust and your fmic)



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They are both replacements. One is heat range 8 and the other is heat range 9.
If you plan on getting tuned, go heat range 9. Heat range 8 might be too cold for a lightly bolt on car. I don't see any harm, just not really necessary.

I'm working on getting the equivalent NGK replacements and stocking factory plugs as well.
 
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