Do spark plug cables make a difference?

There isn’t any performance to be gained from spark plug wires, just better build quality, which gives you not a better spark, but rather maintains an appropriate spark for more miles/years before their performance degrades to the point of needing replacement.

Do NGK Iridium plugs need to be gapped?

Iridium Power Gapping Tips In most cases your Iridium Power plugs do not need to be gapped. Should you decide to re-gap your Iridium Power plug, use extreme caution as improper gapping may damage or destroy the Iridium center electrode or porcelain center.

Do Iridium spark plugs really make a difference?

Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25\% longer than comparable platinum spark plugs.

Can Iridium spark plugs cause misfire?

Sponsored by Autolite Specifically, iridium fine wire spark plugs that have been engineered for more focused ignition, and fewer misfires. For ignition coils, they will send a misfire code if they fail, but the code may not be the cause of the actual problem.

Are thicker plug wires better?

Thicker conductors are required to carry more amps, but spark plugs are fired with very high voltage and low amperage. The thicker wires do have better insulation, usually silicone and that stands up to the heat of the engine compartment and higher voltage from modern ignition systems better than the older wires did.

Should you put anti seize on spark plugs?

NGK spark plugs are installed at the factory dry, without lubrication or anti-seize. Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.