Review on Enhance Performance with 6 New NGK Iridium IX Spark Plugs TR55IX # 7164 by Doug Hawkins

Used on a 2006 Pontiac G6 V6 sedan. Basic model from 3.5. This was my first time making spark plugs and I was worried I would get it wrong, but it turned out fine. Don't forget to change the wires too! My engine was at almost 150,000 and cylinder 6 was misfiring so I figured my spark plug was to blame. These new plugs are amazing. The engine sounds better than with the OEM spark plugs and I feel it has a slightly more responsive feel. Although maybe it's just because I'm used to it not working well. lol Take her. It's worth it.