Quote:
Originally Posted by MoeTE87
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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I have a BM3 stage 1 tune and have had it for about two years on stock plugs. I just changed my stock plug to 1 step colder. I don't notice a difference in performance. The stock plugs had about 30k miles on them when I changed they and they looked ready for the change. My X5 is a 2018 F15 sdrive35i I love the power with the stage one tune. I am looking to add an EV to the fleet next.