100 octane + stock tune?
After searching the forum, I've seen people on both sides of this issue.
Does anyone actually know for sure whether 100 octane gas yields additional power from the N54 without an aftermarket tune?
Also, I assume that 100 octane is perfectly fine for the engine as long as it's unleaded, right? I've heard some people talk about it wearing out the spark plugs, clogging injectors, etc, but don't see how that could be if it's just a higher quality version of what I put in every week.
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2016 340i M Sport | 6MT
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