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      01-31-2013, 12:51 AM   #2
robc1976
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Drives: E90 335i
Join Date: Mar 2012
Location: Illinois

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Quote:
Originally Posted by Lifted07Duramax View Post
Just curious how people are liking the NGK plug that is 1 step colder than stock plugs.
do they notice better performance? Less knock? Better mpg possibly? Even though its good enough
I am and love them, not one misfire and that's going up to 22psi
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