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      02-11-2019, 11:19 AM   #5
alohasurftoad
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Drives: 428i gran coupe
Join Date: Apr 2015
Location: hawaii

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The Dinan warranty you're thinking about runs concurrent with the original 4yr-50000 warranty, which you no longer have. otherwise they have a 2yr warranty on their parts.

the stutter you are referring to seems to be a problem with fuel flow and not your sparkplugs or gap. some run a step colder plug. not sure

i suggest you post threads like this in the appropriate sub-forum for better response

https://f30.bimmerpost.com/forums/fo...play.php?f=421