Spark PLugs
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 what do you reckon are the best spark plugs considering cost/performace trade off? I want to do a part service soon, and before I plunge for the NGK standards that are cheap, I wonder if its worth forking out a touch more for some slightly better ones? anyone any experience of the different types, Denso iridiums, NGK IV etc etc? 
 
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 I expect its only worth upgrading the plugs if your upgrading the leads too, 
 especially were denso is concerned.
 
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 I always use bosch super 4's always been good and never had a problem 
 
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 I second what dj said, i have used bosch super 4's on my last 4 cars and they have been really good. i even noticed the difference when i put them in my wifes grumpy old golf! 
 
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 cheers chaps, i will check out the super 4's! 
 
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 @fe91d13f27=clivvy: cheers chaps, i will check out the super 4's! 6 = £22.14 for the lot inc P&P