Thread: Spark plugs for turbo
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Old 04-13-2017, 03:39 PM   #72
empower-auto
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Quote:
Originally Posted by whitefrs View Post
Great info by @2forme
First thing -- the OEM plug is a 9 heat range plug.

Next, you don't NEED to change it by your rule.

I'm 150+ whp over stock and on an HKS plug in the OEM 9 heat range -- no issues.
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