Iridium spark plugs

andrewb2006

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About to change the plugs on my LT is it worth the extra cash for fancy plugs?
 
Huge difference on older bikes/cars with carbs and points ignition, a slight improvement in performance on a more recent bike/car with carbs and electronic ignition , BOT ALL difference on a sorted vehicle with correctly functioning fuel injection and electronic ignition except for better longevity
 


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