Quote:
Originally Posted by MoeTE87
For those of you who flashed to BM3, did you change your spark plugs? If so, did you keep the same gap or go 1 step colder?
My X5 has 48k miles and I don't believe the plugs have ever been changed.
Thanks!
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I went one step colder when I did stage 2. If you need to change anyway, I would go colder.