I have done a lot of searching and uncovered a lot of different experiences and opinions on this matter. The 400/430 guys seem very happy with torquemaster plugs, but as a 300 owner I would like to hear opinions from my fellow owners.

I have read that Denso and NGK are largely identical, with the latter being slightly cheaper. However, several GS300 owners have also mentioned great success with the Torque Master plugs. What other plugs are out there and widely used?

In terms of performance, gas mileage, and longevity, which plugs are the best for the ole' 2JZ?

Thanks guys

 

Also, I know it's convenient to include a poll because you can just submit your answer and move on, but if you guys wouldn't mind adding your personal experiences and some pros or cons, it would be greatly appreciated.

 

What is the intended use for your car? Are you looking for longivity in your plugs or you want performance? If you want a good medium btw. the two, I'd stick with the NGK Iridium IX. If you want performance, look into the Denso IK series plugs. They will need to be changed out at 30k miles interval. But it's not hard at all to change plugs after you do it a couple of times. I can replace all 6 plugs in around 30 mins. now.

 

i have TM plugs in my 300 with K&N drop in air filter and Tanabe Exhaust. I honestly cant tell the difference from stock. Smooth acceleration and idle, no problems whatsoever.

 

i've always used NGK in all my cars. cheap but very effective.