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Old 04-02-2010, 05:34 PM   #1
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Icon2 NGK Laser Platinum vs Iridium IX

For 98 Accord v6, which would you recommend? Laser platinum is the OE recommendation, but most people recommend Iridium IX's. And I've also read some people say Iridium's are worthless, they increase idle and don't do anyting. I know spark plugs dont boost performance, I'm trying to keep the car stock, just need to know which is the better choice in terms of money vs quality.

Model # PZFR5F-11 ($9.99) vs ZFR5FIX-11 ($6.99)
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Old 04-02-2010, 05:46 PM   #2
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Default Re: NGK Laser Platinum vs Iridium IX

The Laser Platinum's will last a little longer than the Iridium IX, but the Iridium IX is still a fairly long lasting plug and in theory will deliver slightly better performance. I'd go Iridium IX's personally.
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Old 04-02-2010, 06:04 PM   #3
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Default Re: NGK Laser Platinum vs Iridium IX

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Originally Posted by Mike95lude View Post
The Laser Platinum's will last a little longer than the Iridium IX, but the Iridium IX is still a fairly long lasting plug and in theory will deliver slightly better performance. I'd go Iridium IX's personally.
really? you think platinum plugs would last longer, all else equal? i'd never guess that - alot of OE turbo cars are going to iridium for (purportedly) the opposite reason.
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Old 04-02-2010, 06:54 PM   #4
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Default Re: NGK Laser Platinum vs Iridium IX

go platnum bro. and NGK. youll get longer life from them. thats why they were in the car as OEM parts
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Old 04-02-2010, 06:57 PM   #5
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Default Re: NGK Laser Platinum vs Iridium IX

oh yeah and they were part of an emissions system recall on alot of hondas back in 2000. it wasn the plugs necessarily but honda had us replace them anyway with plug wires dist. cap and rotor
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Old 04-02-2010, 11:07 PM   #6
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Default Re: NGK Laser Platinum vs Iridium IX

I personally chose Iridium IX over Laser Plat because I was under the impression that it would last longer.....
I'm fairly sure the difference between the two will be insignificant
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Old 02-01-2011, 04:12 PM   #7
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Default Re: NGK Laser Platinum vs Iridium IX

so which one?

I have a 1997 Accord SE

cant decide on

Iridium IX ZFR5FIX-11 or Laser Platinum PZFR5F-11
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Old 02-01-2011, 04:50 PM   #8
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Default Re: NGK Laser Platinum vs Iridium IX

i use the iridiums, i know everyone says it doesnt make a difference but my car had noticeably better throttle response after putting in the new plugs. i was pretty impressed
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Old 02-01-2011, 04:57 PM   #9
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Default Re: NGK Laser Platinum vs Iridium IX

Personally I'd save the money and buy the Iridium IX if you are looking for long life..

Alternatively you will get probably the same performance from the G-Power, but at about 33% the cost.. Just wont last as long.. Your call
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Old 02-01-2011, 06:49 PM   #10
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Default Re: NGK Laser Platinum vs Iridium IX

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Originally Posted by ONeill24 View Post
i use the iridiums, i know everyone says it doesnt make a difference but my car had noticeably better throttle response after putting in the new plugs. i was pretty impressed
are you sure it wasnt a placebo effect?
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Old 02-01-2011, 08:40 PM   #11
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Default Re: NGK Laser Platinum vs Iridium IX

It could also be that he replaced worn plugs with new ones, which would always lead to a better response...

Iridium and platinum are not really meant for more power, if you happen to gain a horsepower is incidental due to concentration of spark, but generally, they are meant to outlast other plugs (with the exception of the very very fine tip Denso which was built for "power" and they tell you will not give long life)
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Old 02-02-2011, 11:00 PM   #12
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Default Re: NGK Laser Platinum vs Iridium IX

Quote:
Originally Posted by ONeill24 View Post
i use the iridiums, i know everyone says it doesnt make a difference but my car had noticeably better throttle response after putting in the new plugs. i was pretty impressed
This could also be that your last plugs were done....Noticeable as doing stock replacement?

I'm using G-Power, I've used Iridium IX's, and i can't tell the difference. Track times are the same. Using Premium 91 Octane. H22a.

I've got NGK G-Power's in my Civic & Accord. Much Cheaper. Great Product. Long Lasting. It's not a huge amount for plugs, but 30% less than iridium's.
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Old 02-03-2011, 04:13 PM   #13
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Default Re: NGK Laser Platinum vs Iridium IX

I've been running the Iridium IX with no problem whatsoever. Tip of the plugs still look good from April '09 when I did my H22 swap til this day.
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Old 02-03-2011, 07:34 PM   #14
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Default Re: NGK Laser Platinum vs Iridium IX

30% less than iridium? Im sure its A LOT less.. G power for my car is about $3 a pop.. Iridium is $7.. That puts it at about 42% the cost of the iridium.. It will last quite a while as well, just not as much as the Iridium IX..

I would decide like this.. If you change the plugs yourself, go with the G-power.
If you pay someone to change it, put in the iridium so you know it wont have to be changed for quite some time (assuming all your seals etc are good)
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Old 02-05-2011, 08:06 AM   #15
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Default Re: NGK Laser Platinum vs Iridium IX

Quote:
Originally Posted by specialone70 View Post
are you sure it wasnt a placebo effect?
Quote:
Originally Posted by nicolaselias View Post
It could also be that he replaced worn plugs with new ones, which would always lead to a better response...

Iridium and platinum are not really meant for more power, if you happen to gain a horsepower is incidental due to concentration of spark, but generally, they are meant to outlast other plugs (with the exception of the very very fine tip Denso which was built for "power" and they tell you will not give long life)
Quote:
Originally Posted by rival12 View Post
This could also be that your last plugs were done....Noticeable as doing stock replacement?

I'm using G-Power, I've used Iridium IX's, and i can't tell the difference. Track times are the same. Using Premium 91 Octane. H22a.

I've got NGK G-Power's in my Civic & Accord. Much Cheaper. Great Product. Long Lasting. It's not a huge amount for plugs, but 30% less than iridium's.
I'm with these guys. You probably had worn plugs, so any new plug would have made a difference.
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