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Discussion Starter · #1 ·
I've been seeing a lot of ads lately about the E3 spark plugs. I dont really know too much about them. Do you guys think they actually work or is it all just good marketing on their end? Ive seen so many manufacturers claim their parts do this and that, that I dont know if they actually make a difference or not.
 

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I've seen them post supposed dyno results showing a slight increase in power and also claims that it improves mileage too. What they're saying is believable and somewhat has supporting proof. But I wont believe it until I have first hand experience with it.
 

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tried them before. huge waste of money. in fact they made the engine perform worse. nothing beats using oem spark plugs. since the gap and heat range are exactly what manufacturers recommend. most oem manufacturers use ngk anyway and ngk is an amazing brand.
 

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I've always used the stock Toyota plugs. I've tried other brands/types but I always come back to Toyota. They last longer and work better for me.
 

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Nothing really beats OEM. Although I've tried using copper plugs instead of platinum and I did notice a slight change in power and gas mileage. One of my friends that does tuning said its because copper is a better conductor of electricity. Only downside is they wear down a lot quicker than platinum or iridium plugs which means you have to replace them more frequently.
 

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Discussion Starter · #7 ·
OEM it is then. Thats why I like to ask questions first before I spend money. That way I dont waste money on useless parts. Plus Ive always had good experience with NGK on all my other vehicles so why bother changing when theres nothing wrong.
 

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My iQ came with three years free scheduled maintenance, you might want to check and see what the recommended mileage for changing them is, free spark plugs!
 

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Grrrrr, mine came with two :) Aren't plugs these days good for at least 60K? Sounds like noone has to worry about this probelm for a while at least.
 
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