spitfire plugs Options

[rocky2006]

these any good? are they worth buying?

[toyotatech3]

no!!! get denso iridiums, thats just my opinion

[thedevilmaycrie]

i got some hks idiruims and love em

-DMC

[forkee]

you mean splitfire? the one that looks like a v?

[DamDirtyApes]

bocsh platinum+4's ROCK

[rocky2006]

yeah, spitfires look like a v at the tip. theyre relatively cheap too (~$17 for 4 haha). for those of you who used more than one set of plugs, which ones do you prefer for the price and did they make a difference?

[forkee]

i had bosch platinum 4 spark spark plugs but my mechanic said those are bad because since there are 4 routes for the spark to travel, the amount is lessened, so its not very strong, unless u upgrade the power going to it. he DID recommend the v shaped plugs and the 2 spark ones.

[rocky2006]

the 4 electrode plugs should be fine. my guess is that the spark still only goes to 1 of the electrodes on the plug per fire, not all 4. i could be wrong, im not a mechanic or electical engineer .

[Anub1s]

When you have the four electrodes it will take the fastest route to get out of there unless the spark is strong enough, if you don't have an upgraded ignition it is useless to get the 4 electrode plugs (i.e. Bosch Platinum +4's) Just go with the Denso iridium plugs (which I believe Toyota uses stock) because they will work better, maybe get some upgraded plug wires and it will help even more. But, don't get the 4 electrode plugs untill you have upgraded the ignition.

Edited for the DamDirtyApes

This post has been edited by Anub1s: Dec 30, 2004 - 12:09 PM

[DamDirtyApes]

i have +4s and my car has never run smoother ...

[Anub1s]

Edited for ya,

I shouldn't have said "bad for your car" but it is useless. Just get some nice 2 electrode plugs and call it good until you have the ignition to fully take advantage of them.

[rocky2006]

what else in the ignition can you upgrade?

[playr158]

ignition control unit, wires, cap, plugs, booster (sumthing thats cylindrical i just don't remember the name)

[Kwanza26]

what else in the ignition can you upgrade?
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why? if you're looking to make more power... you're looking at the wrong modification...

[rocky2006]

so are getting new plugs a waste of money or just the other ignition stuff?

[Kwanza26]

so are getting new plugs a waste of money or just the other ignition stuff?
[right][snapback]228484[/snapback][/right]

If your car isn't running really good and could use a tune up... then it will make the car run better. Getting the most expensive spark plug, hottest baddest ignition wires, etc... isn't gonna increase performance over stock. It'll just perform more efficiently than the old stuff... but that's not to say it'll be better than new "cheap" stuff.

What I'm saying is, if your engine is stock, your induction is relatively stock (intake or whatever), upgrading (if you want to call it that) spark plugs to so-called "V-Power" or "Iridium" or "spitfire" isn't gonna increase overall performance. It'll improve performance if your current plugs are worn or something, but it will not exceed factory output unless your engine has some significant modifications. Same goes with almost all other ignition "upgrades". Just one word of advice... stick with the Japanese brands and the reccomended range for your car. Either NGK or Denso plugs. Nothing against Bosch plugs or the guys who run it, but Bosch plugs are more-or-less not specifically designed for, or shall I say, our engines are not designed for Bosch plugs. I've seen some funky results on Japanese cars running non-Japanese spark plugs...

[toyotatech3]

so are getting new plugs a waste of money or just the other ignition stuff?
[right][snapback]228484[/snapback][/right]

If your car isn't running really good and could use a tune up... then it will make the car run better. Getting the most expensive spark plug, hottest baddest ignition wires, etc... isn't gonna increase performance over stock. It'll just perform more efficiently than the old stuff... but that's not to say it'll be better than new "cheap" stuff.

What I'm saying is, if your engine is stock, your induction is relatively stock (intake or whatever), upgrading (if you want to call it that) spark plugs to so-called "V-Power" or "Iridium" or "spitfire" isn't gonna increase overall performance. It'll improve performance if your current plugs are worn or something, but it will not exceed factory output unless your engine has some significant modifications. Same goes with almost all other ignition "upgrades". Just one word of advice... stick with the Japanese brands and the reccomended range for your car. Either NGK or Denso plugs. Nothing against Bosch plugs or the guys who run it, but Bosch plugs are more-or-less not specifically designed for, or shall I say, our engines are not designed for Bosch plugs. I've seen some funky results on Japanese cars running non-Japanese spark plugs...
[right][snapback]228487[/snapback][/right]

i agree with kwanza, i've seen some wierd results too. i use denso iridium's because toyota recommends replacing them at 120,000 miles and the regular denso's at 30,000 miles.

[97GTinKC]

i have +4s and my car has never run smoother ...
[right][snapback]228220[/snapback][/right]

I'd bet it would have ran smoother with ANY brand of new plugs

FWIW, I believe the theory on mult ground electrodes was it would sort of rotate among them, thinking the last one to fire would be warmer than the others and heat increases resistance, so the spark would jump to the "coldest" ground electrode, now my thoughts on this is I'd like to see them measure it. what difference will a spark make since immediately after you have a controlled burn throughout the combustion chamber? and the incoming fuel charge will cool the same ones the same way every time? seems like it would depend on where each electrode was pointing with the plug tightened. I suppose extra electrodes could actually hinder a burn and hurt perf, maybe this is why they seem to work better in some cars? Indexing the plugs used to be a big deal for serious race engines, took a lot of time to get an engine set up so all the plugs tightened up with the electrodes in the same position in relation to the incoming fuel/air mix.