I know they use "colder" plugs than N/A guys due to the immense heat produced by turbocharged motors. Gapping should only be changed if you modify your ignition system. AFAIK, the DEs and DETs have the same gapping as recommended by Nissan.maxpower said:great! now. on most turbocharged cars. gaps are closed more right. or not right.
Yes, improper gapping can contribute towards detonation. That millisecond difference in the distance travelled to make the spark is HUGE. Incorrect gapping can cause other problems that will prevent the motor from running properly.maxpower said:side question. does improper gapping cause detination, are contribute to it?