Thread: Correct spark plugs for stock M5?
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      01-23-2020, 12:18 PM   #13
Dwaynos
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Drives: F10 M5 Monte Carlo Blue
Join Date: May 2018
Location: UK

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Had 15k on my bosch plugs. Installed stage 1 tune and had misfires. Went 1 step colder NGK plugs.
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