hey guys, was just wondering something. if the 3923 plugs help with performance in a 4.7 magnum over the 3924 plugs with a stock tune. will the 3922 plugs help anything when running the superchips performance tune on 93 octane? basically will it help to run two steps colder plug with the superchip performance tune ?

 

You really don't need the colder plugs unless you plan on a more aggressive tune/advancing timing. The colder plugs will help eliminate the chance of engine ping. If you not going to run boost, nitrous or aggressive tunes I would stick with your current plugs.

 

the 3923 plugs are great for just the 4.7, i run the 3922 for the reason of the nitrous an aggressive tunes. an for under 20.00 at walmart, a very good plug