MINI Cooper Performance Spark Plugs

To take full advantage of the enhanced performance that can be gained by upgrading the air intake system and remapping the engine control unit computer, you’ll also probably want to upgrade your Mini Cooper spark plugs. An expanded and more consistent spark flame will provide more sustained and consistent explosions within the cylinders. This in turn will give you smoother engine operation and more consistent power across the engine revolution range.
One spark plug that we can recommend from our own experience is the NGK Iridium IX, which features a 0.6mm iridium center electrode. The high-tech material improves ignition within the cylinders without sacrificing durability. The tapered ground electrode increases the expansion of the flame center as the spark plug fires, and the superior heat range afforded by the plug design is well-suited to high-performance driving. These spark plugs retail for about $8.00, adding less than $32 to the cost of your upgrades. That’s a small but sensible investment in engine performance on both the Cooper and Cooper S.