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Discussion Starter · #1 ·
Is there any noticible gains after changing the stock spark plug wires to a thicking one?

If so, Any known brand is good? or just thicker is better?
 

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1990 Celica GTS
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Nop. Ignition upgrade won't gain anything unless the old one is failing. Stock wire is good for most case. The thicker wire just got thicker insulation to prevent cross fire with higher voltage. Even with MSD, stock wire still provide enough insulation.
 

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Car Breaker
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Like I said with the ground wires thread...

If you want better looks you can upgrade.

The results may be minimal, depending on how screwed up your sparks are etc etc

Some good brands: NGK, Nology
 

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the only thing that is good things about more expensive plug wires is:

1. thicker insulation (pineapple said)- causes less cross signal amongst the wires

2. if they are silicone or carbon core. carbon core tends to crack or get weak in place as time and use progresses. Silicone has the ability of flexibility and the life span will last longer.
 

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Hello, I'm from Taiwan

I've had Denso Iradium SK-16 plugs and Shenski plug wires on my 1991 corolla. The change is slight but noticeable.
 
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