Thank you for the link. Thats a big help for everyone, now people can decide for themselves what is right for them.

 

all i can say is if u get some iridiums you will gte like a 3hp increar. not enough to "feel" but hell anything and everything helps. every lil bit helps. oh and from my experience with using iridiums in other cars denso plugs are better than ngk's allthough to me ngk wires are next best to hotwires. either way no wires in da scion.

 

IMO, Toyota make cheaps cars with good reliable, acceptable performance and good MPG. They want to maximize the profit, but not the engine performance. Lexas is their high-end cars that tuned toward performance and comfort. It is unlikely that they use the best performance parts in scion unless the parts cost less or add substantial benefit to the car.

You guys decide....

 

^ Um, no.

 

yeah theres not too much performance at lexus nowadays. the lil coupes r decent and the gs's are cool but not hi perf at all.

 

ok, my bad

 

What I mean by performance is just a bigger engine.

 

so like.... should i got those sparkplugs or what?

 

these plugs can only do good for your ride. No harm is done to the motor.

 

r those better than 4-prong platinum?

 

Electricity takes the path of least resistance.
So even if the sparkplug had 100 prongs electricity will only travel down 1 prong.
The only things I can think that will affect spark will be quality of conductor and how well that conductor will withstand heat and corrosion.

 

Show me the dyno sheets.

 

 

Okaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay. I saw that link and checked it.

But how about the other plugs that are mentioned?

 

Or the test parameters? If someone could show me some conclusive data that proves that merely switching from new stock plugs to irridium plugs will increase horsepower I'll eat my shorts. I have all the technical training that Toyota has to offer and I have never known this to be true. Where are you guys getting your info?

 

From the Faerie dust.
Why would a Company out to make money exagerate to get sales?

 

Beats me.

 

Hello greeting from singapore, didn't know that iridiums costs that much in america. In singapore there are plenty of iridiums to choose from namely:

Denso iridium at S$62 (Set of 4)
OWS double iridium S$53 (Set of 4)
Volker Iridium S$47( Set of 4)

Found that fuel comsumption lower after fitting these and lighter foot. Anyway have a dyno comparing the volker and denso showing that volker is slightly better few horses.

Links :

http://www.volker-iridium.com/

http://www.ows.com.au/index.html

http://www.densoiridium.com/

Dyno for a vios auto comparing Denso iridium with volker iridium

 

What size spark plug socket do our cars use?

 

I have Denso iridium plugs in my car. Without using anti-seize applied around the screw contact, the plugs don't perform well. I only feel very small improvement and more vibration. My gas mileage is also the same or a little worse. Yesterday, I took them out, I noticed carbon deposits everywhere but the tips are still ok. After I apply some anti-seize and put them back, I feel that the car is lighter, has better acceleraion and less vibration. A better feel than using the stock plug for sure.

Anyway, for anyone who want to try, I think the iridium plugs works for our car if you install them properly. Otherwise, the stock one runs better.