Also wanted to update thread with my recent plug install. The CTA swivel socket from FCP was great! I used the Bosch stock plugs (non-bmw branded), checked gaps and all were within spec. All ordered from FCP. Hardest part of the install was taking all of the plastics/covers/brackets off to get to the plugs. Used compressed air to clean connections.
Drove ~400 miles straight a few days after install and it was all working great. I'm running the MHD stage 1+ tune.
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2012 Jet Black E82 135i, DCT, PPK, MHD Stage 1 , VRSF UCP, HPF FMIC, Racing Dynamics LCP, Liqui-Moly leichtlauf high tech 5W-40.
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