Spark Plug Cable @ Ignition Spark Wire

Ignition wire or spark plug cable is a cable composed of one or more electric conductors and covered by insulation. In short, those wires are nothing other than conductors. Although most new ignition wires will perform the function of conducting coil output to the spark plug, what is important is EMI (Electro Magnetic Interference) suppression. All electronic devices can be effected by EMI emitted from ignition wires. As production vehicles age, engine management sensors and wiring deteriorate and become more susceptible to EMI radiating from improperly suppressed ignition wires. To be truly effective, ignition wires need to be EMI suppressed for a reasonable time, while having the ability to maintain good conductance without overloading other ignition system components.

I been using NGK Power Cable for quite some time since it came when I bought the engine. I keep on wondering how old exactly that cables were since I've been using it for 4+ years and I have no idea how long it has served the last owner back in Japan. The trademark blue coloured cables were already turned to black. So when I opted to change those cables, I saw an advert in local car forums selling this new Quadcore 10mm cables for 4G92 MIVEC at a fraction of the price of the new NGK Power Cable. Pardon the name of the new cable. It really reminds me of Intel's Quadcore family processors. It was given that particular name since it has 4 inner core wires. Yea, but still...

When I pull out the NGKs, one of the rubbery boot plug was badly hardened and inside it, a small part of the metal tip was chirped off. A quick inspection later reveals that all the remaining wires were still acceptable in condition. This is one of the reason why big names put big tags on their product. The brand brings quality assurance. The new Quacore cables didn't snugged into the plug hole as perfect fit as the NGKs.The boot plug also look less durable. But these new cables did perform the task well. The car starts on every first crank. Power and fuel consumption did remain the same though.