Thread: 135i Spark Plug replacement DIY...
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      03-08-2018, 10:50 PM   #211
icegrill
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Drives: 2015 M3
Join Date: Jan 2018
Location: Oregon

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Just did my new to me 135 with 75k this weekend. I used bosch coils and ngk iridium plugs gapped to .022 WOW! Noticeable difference in smoothness and starting speed. Thanks for the all the tips!
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