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Bringing this old thread back to life.
I just recently bought a 2018 F15 xdrive35i and want to install BM3. I reached out to Bootmod last week about the spark plugs and they recommended to change them to one step colder for better performance.
I know this thread was started in 2021 and it's now 2023, so I have a feeling they have done plenty of research from then to now. So I will be replacing my spark plugs next week and flash the car to Stage 1 93 octane tune.
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Present: 2021 BMW M340i Mineral White
Past: 2018 BMW X5 Mineral White, 2018 BMW 340i Alpine White, 2016 BMW F15 X5 xDrive / Glacier Silver, 2011 BMW 335xi / Alpine White, 2008 BMW 135i Sedona Red
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