Clio spark plugs

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Hey, i was just wondering, would changing my spark plugs and leads make any difference to performance? if so how can i know what ones to get? any help is good
 

Cue

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not really, depending on what car you have. RS models generally have very good sparkies, even the best after-market ones offer little improvement.
 
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I would say yes they do. Most cars loose power from work spark plugs, HT leads, dizzy cap, rotor arm etc. By replacing all these when needed and doing an oil change, general service items can restore power lost which can be a greater gain than most aftermarket mods.

I have found this on my 190.2bhp Hybrid since owning it from a normal 1.8 16v over 9 years ago.
 
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