Socrates

Anybody know how good these Iridium spark plugs are? They're like double the price.

I'm going to change my plugs and I'm wondering which brand to use. I know we need platinums, but there are some for like 1.99 and some for 5.99, then there's these Iridiums for like 12.99.. Are they worth it?

mzmtg

iTrader: (11)

Waste of $$.

Get NGK copper plugs for $1.59 each and get on with life.

Socrates

Wow, clever

maxinitout

get the bosch spark plugs. there the best out there

Ant96GLE

iTrader: (4)

Smoking crack?

Bosch plugs suck... badly...

For some reason our cars only like NGK

apbrian112

if you look on flEaBay you can find a set of NGK Iridium IX for $40 shipped. can't go wrong for that price. but definately stick with NGK. i've heard some bad experiences with bosch plats...

bladerunr

iTrader: (14)

Japanese cars require japanese plugs. Don't waste your time and money on anything else. Iridium's and Platinum's last longer than copper, hence the price difference.

Sizzam

i have the bosch 4 plus plugs and i think they are absoutely fine

TonyGotSkilz

iTrader: (6)

Whats the benefit of copper plugs on an NA car without no2? I thought copper plugs ran colder and slowed down ignition timing slightly.... why would u want that? I hear FI people using them but i never heard they were any good for NA. I don't really know so i'm asking not criticizing?

Nealoc187

iTrader: (23)

That's not accurate. Copper is a better conductor than platinum is, platinum lasts longer though and is more expensive, hence why the plugs cost more. You can get Platinum and Copper plugs in all the standard heat ranges, 5 is standard for our cars. 6 or 7 for use with nitrous or forced induction, these are known as "colder" heat ranges.

There has been some talk that Iridium spark plugs are good for high output forced induction cars having spark blowout problems like mine is, so I'm going to try a set at the advice of MardiGrasMax, he is using them and said they cured any spark problems he was having. But for regular bolt ons or mild forced induction cars I'd stick with copper unless spark problems become evident (and you will surely know if you are having spark problems).

sterlingmaxima

iTrader: (16)

denso irid are a big waste don't by all means get these

DonGfun

iTrader: (19)

I just got the Irdium ix
BKR7EIX-11 2 step colder plugs (is this a good choice)
Going to step up to a 50 shot

I have Bosch 4 now!!!!

or should I just run
BKR7ES-11

PLEASE HELP

Donchoka

Why are the bosch plugs bad for our cars ?

jbreit

any engine that was designed to work with NGK plugs from the factory won't run right on anything but NGK. This could be a weed whacker, motorcycle...whatever. Stick with NGK.

bkr5eGP - poor mans platinums are about $3.50 and last 35-40,000 just like iridiums. Coppers will last 30K. Laser plats last 60-70K. $'s/mile coppers are the best price by far

sterlingmaxima

iTrader: (16)

iridiums burnout faster if you want i can send pics of mine they got like 5 thousand miles on them the ngk last longer in my opinion

RODMAN

I have had Iridius in my car for over two yours and I love them. I bought them against all the advice of the org members at that time. They are performing flawlessly after 15,000 miles and yes I would buy them again even though they are way too expensive.

Keyser Skoze

I have read that most japanese cars run plugs with the internal setup unlike american and german cars that use the exterior ones. I think its the platnum or something like that thats internal or external. Ive used them in the fords and they are great tried it on my old max and they suck.