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NGK Laser Iridium plugs

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Old 07-29-2008, 10:06 AM
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NGK Laser Iridium plugs
I have a maxima 00', and I am doing the regular tune up for my car and I was wondering if it is a good idea to get the NGK laser iridium plug part #7944. Are they too extreme for my max or should they be fine?
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Old 07-29-2008, 10:08 AM
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I think that would be okay. I use laser platinum myself.
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Old 07-29-2008, 10:12 AM
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no SES light yet? Because I have heard a few stories about air intakes, that people install aftermarket airintakes and their MAF sensor goes crazy.

EDIT: What difference do you notice with laser platinum?
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Old 07-29-2008, 10:16 AM
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Originally Posted by sampimpinthug
EDIT: What difference do you notice with laser platinum?
Laser Pt is stock, so probably nothing.
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Old 07-29-2008, 10:16 AM
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My bad I meant Laser Iridium. Sorry!
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Old 07-29-2008, 10:19 AM
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Strange PN you got there. Any more info on this plug?
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Old 07-29-2008, 10:22 AM
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again my bad it is 7994.
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Old 07-29-2008, 10:26 AM
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I was expecting something along these lines :

PFR5G-11
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Old 07-29-2008, 10:26 AM
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That is an NGK stock#, not a part#. That would be the OE Laser Iridium IFR5E11.

I would save my money and just get the NGK platinums, but that is just me.
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Old 07-29-2008, 10:30 AM
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If I get the laser iridium would it drop my rpms? Because the sole reason I might buy them is because I want my car to feel like it is not started when I am stopped.
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Old 07-29-2008, 10:33 AM
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Originally Posted by sampimpinthug
If I get the laser iridium would it drop my rpms? Because the sole reason I might buy them is because I want my car to feel like it is not started when I am stopped.
It wont drop your idle RPM's but it has been said to idle smoother. I noticed that with my current plugs (Iridium). But, it could have been a number items, most namely, they were well over due for a change.

Also, to add to what mtrai stated, it is not worth it to pay that much more for a smoother idle.
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Old 07-29-2008, 10:35 AM
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Your idle RPM is controlled by your ECU, not by your spark plugs. At idle in neutral with no accessories on and fully warmed up it should be solid at 750 RPM.
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Old 07-29-2008, 10:37 AM
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what are the possible things which could make my idle smoother? I know distributor cap is one of the things? any others?
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Old 07-29-2008, 10:38 AM
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in Neutral it is solid at 750 and feels like the car is not started but when I put it in drive it is not as smooth.
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Old 07-29-2008, 10:49 AM
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Worn motor and transmission mounts are a commom culprit.
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Old 07-29-2008, 11:07 AM
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I guess there is nothing much i could do about that.
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Old 07-29-2008, 11:11 AM
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You could replace them, but it is going to be pretty expensive for new ones.
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Old 07-29-2008, 12:15 PM
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The price for the actual mounts are not bad, it is labor involved that can get costly/time consuming.

And we do not have distributors here.
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Old 07-29-2008, 01:34 PM
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Originally Posted by sampimpinthug
what are the possible things which could make my idle smoother? I know distributor cap is one of the things? any others?
Grounding Kit (made by Shinduho I think?) made a lot of difference in my RPM.
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Old 07-29-2008, 01:56 PM
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Iridium plugs will last longer than platinum, supposed to potentially go 200k between changes.

Iridiums did make a difference in my 626 but the plugs in it were getting old so hard to say how much of the improvement was the actual plug material and not just that I replaced old plugs.
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Old 07-29-2008, 02:08 PM
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Originally Posted by Scottwax

Iridiums did make a difference in my 626 but the plugs in it were getting old so hard to say how much of the improvement was the actual plug material and not just that I replaced old plugs.
That sounds so familiar.

Originally Posted by Me
I noticed that with my current plugs (Iridium). But, it could have been a number items, most namely, they were well over due for a change.
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Old 07-29-2008, 02:47 PM
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i have never had a set of plugs last as long as 200K
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Old 07-31-2008, 10:12 AM
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Originally Posted by NmexMAX
The price for the actual mounts are not bad, it is labor involved that can get costly/time consuming.

And we do not have distributors here.

maxima 5th gen doesn't have distributor? I heard few newer cars come distributorless, didn't know maxima did.
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Old 07-31-2008, 10:48 AM
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how about those pulse plugs im not doing(expensive)but was wondering if anyone had experience with them.
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Old 07-31-2008, 11:29 AM
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Originally Posted by sampimpinthug
maxima 5th gen doesn't have distributor? I heard few newer cars come distributorless, didn't know maxima did.
4th gen+ has no distributor.
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Old 07-31-2008, 01:47 PM
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Originally Posted by NmexMAX
That sounds so familiar.

I got your back on this one. Just making sure it isn't just one person saying it.
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Old 07-31-2008, 01:50 PM
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Originally Posted by sergey85
how about those pulse plugs im not doing(expensive)but was wondering if anyone had experience with them.
Pretty expensive plug to have to pull the intake (5.5 gen) and replace every 50k miles.
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Old 07-31-2008, 02:10 PM
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Originally Posted by Scottwax
I got your back on this one. Just making sure it isn't just one person saying it.
Yup, always helps, there’s power in numbers (quantity)
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Old 07-31-2008, 04:57 PM
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replacing the NGK platinum ones with the Iridiums ones... will let everybody if I feel somethnig different. As for the price they were the same 9.99 each.. Autozone.. Orlando Florida.
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Old 07-31-2008, 10:42 PM
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I've been running those iridium plugs as well, one step cooler since I do alot of highway driving and going to the strip now and then.
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Old 08-01-2008, 06:59 AM
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Originally Posted by CMax03
I've been running those iridium plugs as well, one step cooler since I do alot of highway driving and going to the strip now and then.

I run 1 step colder on my rear bank only .
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Old 08-01-2008, 07:34 AM
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Originally Posted by Lontar1
replacing the NGK platinum ones with the Iridiums ones... will let everybody if I feel somethnig different. As for the price they were the same 9.99 each.. Autozone.. Orlando Florida.
NGK Iridiums were $6.99 each when I bought them for my old 626 about 18 months ago.
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Old 08-01-2008, 07:38 AM
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Originally Posted by Scottwax
NGK Iridiums were $6.99 each when I bought them for my old 626 about 18 months ago.
Invalid apples to oranges comparison. Even from 01-02 the PN is different.
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Old 08-01-2008, 07:55 AM
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Originally Posted by CMax03
I've been running those iridium plugs as well, one step cooler since I do alot of highway driving and going to the strip now and then.
Since I only do about 1/2 my driving on the highway, does that mean I should stagger and run every other plug cold?









































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Old 08-01-2008, 07:57 AM
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Do 1 bank only...
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Old 08-02-2008, 12:04 PM
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so what is the verdict? should I go ahead with those iridium or not? I have 133 miles on my car right now.
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Old 08-02-2008, 12:05 PM
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what is a grounding kit? should I get it?
BTW I only got my car recently in april and it had 132 miles on it.
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