my e91 just hit 60k miles so I purchased the 6 NGK plugs...wud I need to adjust the gaps or do they come out of the box already spec'd....I used to work on 964s and 993s and those plugs came already spec'd so there was no need to play w/ the gaps...thanks
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2014 F30 328i N26
2012 e91 Mtech
1997 993 Targa...sold
1991 964 C4....sold
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