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Spark Plugs 2008/2009

needs to be increased such as from no 16 to 20 or 22 depending on the degree of tuning if your automobile has a rebuilt engine or is equipped with ... level of tuning is increased so does the need for a higher heat range tolerance adjustment of the spark gap for ordinary plugs please adjust the gap ... wires connected to a single coil recommended torque and tightening angle for denso plugs use the correct wrench for the hex on the plug and be