Lots of conflicting info when searching...
My car is ASP STGII. Would it be better to go colder, etc?
NGK #PFR6Q-Stock Plug?
Or others suggest PFR7Q, NGK BKR7EIX Iridium, Denso IK22, and Bosch F5DPOR
Suggestions? I dont want any missfires either
Thanks...
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