Acceleration is improved when compared against normal spark plugs.
The 0.4 mm iridium center electrode and the specially shaped ground electrode in an enable a superior ignitability and a lower required voltage than any seen in the past. Accordingly, there is less misfire in areas where required voltage is high, and less misfiring in areas where firing is difficult. No matter how heavy the conditions, high response driving is enabled. As a result, acceleration is better than when normal spark plugs are used. The following graph is an example of an acceleration test.