Replace Spark Plugs And Coil Packs - 9th Generation Honda Civic Si 2012 2013 2014 2015 

Thanks bud!

Awesome

Yep

Honda recommends new plugs at 100k miles, but I swapped them earlier. The Ruthenium plugs are doing well. The combination of new plugs, cleaned mass airflow, and cleaned throttle body gave the Si more power and acceleration. Also the manual transmission drain and fill made shifting smoother, for a nice overall tune up restoring it’s former glory when gunning it on green at stoplights.

Thanks! I used NGK pre gapped at Gap 0.044, link in desc.

7:12 in the video