http://www.overboost.com/story.asp?id=1190 browsing overboost noticed this article anyone have any kwoledge/experience on these plugs?

 

Yea I have denso Iridium sparkplugs in my Eclipse....they have a thinner electroid....and they produce a hotter and more constant spark.....they also last alot longer then normal plugs....most of the time you will see a increase in performance....more like you will accelarate faster....and of course you dont gap these plugs because the cylinoid is so thin...i love and I am sold on them....Denso plugs are around 25 to 30 dollars a plug....yes they are exspensive but they are worth it

 

http://www.cabeperformance.com/detail.asp?SKU=denso1

cabe toyota under the scion section! hmmm but has anyone tryed them? 25 doesnt seem too bad for performance plugs.

 

okay NOT under the scion section my bad. :oops:

 

There are so many different one. Does anyone know which one to use?

http://search.ebay.com/search/search...0&BasicSearch=

 

sometimes you can find them as little as 15

 

Those plugs are the bomb!!!!! They cost a lot!! :? , but they work great! Once installed your idle is smoother and your motor revs up better, plus last longer! I used to stock them but they got too dam expensive.

 

i got denso iridium IK-16 on my accord...those plugs ROCK!!!!!
i got mine for $60 for 6...$10 each is not too bad...

 

I currently use NGK R's in my N20 fed Odyssey....but want to do iridium. I hear they are nice and work well. we'll see.

 

those plugs are not worth it if you are just looking for a little boost in power. they will be better for someone that is going for big power gains.

 

I think they are overpriced and overrated. I burned through mine pretty quick (on other cars). There's no worthy replacement for stock NGK's!!! Unless you've done some radical modifications, there is no need to use a different type of spark plug.

 

This is what a very reputable performance shop in OC told me...

Denso iridium plug are very nice, last long time, but also expensive. They retail from $25 to $30 each and you need 4 for the xB ($100~$120)
These plugs are not bullet proof and it will loose its performance through time (like all other plugs) since most people spend lots money on them and think they last forever, people tend to keep use them even it start to perform like crap
If you are a rich racer, yeah use them as long as you can afford it

But for most of us, its best to use some high performance plug like Bosh or NGK ($6 each), and change them constantly. The performance of the plugs will always at its peek and it will out perform the expensive Denso iridium through time.

 

if you are a HARD driver these plugs will last you a year then you need to replace them, the technical book shows that these plugs will last for 60,000 Miles under NORMAL driving conditions. If you drive hard then these plugs will cost you a prety penny every year, just use the regular denso and be happy. :D The regular denso's don't cost as much and are OEM on our rides.

 

toyota puts iridium tipped spark plugs in all the cars they make at the factory. the factory plugs are from Nippon-Denso, which Toyota owns. that's why all the cars on the lot can go 100K miles w/out new plugs.

 

100k miles w/o changing plugs??? that seems a bit over the top to me, but I've also never kept the same plugs on a car for more than about 20k miles (once a year change).. so are the low end Denso plugs tipped or no?

 

i'm not sure what the difference between the low end plugs, factory plugs, and upgraded plugs is. but as a former salesmen one of the things we were taught is that in conjunction w/ no distributor, spark plug wires, and the iridium plugs you could go 100K miles without changing them.

i wouldn't cause i'm use to changing them every couple of months, just like i can't wait 5K miles to change my oil no matter what the factory says.

 

The misinformation is flying in this thread!

Your ignition system is designed for a particular type of plug, which is the factory recommended plug. If you wish to use a different type of plug, you have to modify the ignition system to suit.

Changing the electrode configuration changes the way the plug responds to voltage, which in turn can upset the timing of the engine. If you take an engine that is designed for fat electrode conventional plugs and replace those plugs with thin electrod plugs you have effectively lowered the firing voltage and the energy delivered by the plug during firing. This is exactly what you _don't_ want to do!

If the ignition system is designed for thin electrode plugs, they can work great, but they aren't a magic bullet for all cars.

You will see testimonials saying "I installed these plugs and got 10HP/smoother idle/easier starting/better love life/etc. Usually, what has happened is that the person has removed worn out conventional plugs and replaced them with new whiz-bang plugs, taking the ignition from 50% function to 75% function. He would have done even better if he had replaced his tired conventional plugs with new conventional plugs!

George

 

Well said George!

That is why the shop I mentioned before recommended me to use factory plug and replce them more often than buy iridium plug and use them forever.

 

heck pull out your old plugs and they say denso right on them. I wouldn't doubt if there were already platnum or iridium.

 

So George, are you saying that I shouldn't install the Denso Iridium Power, U groove tapered cut plugs that I just bought (#IK16's)? And that my Factory Denso plugs should perform better since my engine is tuned for them?

I have 7,500 miles on my box so far. Since they are both denso brand, maybe I can get a benefit out of them.

Anyone have any input?