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Bosch Platinum +4 are a very bad choice
most people know better now
but
in the not distant past , DIY installation of Bosch Platinum +4 spark plugs was / is a very common cause of MISFIRE related DTCs in customer cars
never use them
there is no car manufacturer that recommends them
they are shipped preset with the wrong gap and the gap is not adjustable
use only the OEM recommended spark plug brand and part number for best results
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