does anyone knows if these plugs car cold enough...they're denso u grove part# q20pr-u11...im needed some asap and went to the local auto parts store and they told me that these are pretty similar to the ngk bkre7 or something like that(forgot the actuall part# on the ngk)....they dont have the ngk in stock but got the denso's....i just want to make sure before i put these plugs in...its for my turbo b18c1....