Have been using them in most everything for 15 years and no complaints here.

I would say, cause they're the best. I have tried the bosh and autolite ones and always had problems with them. Bosh and Autolite NGK

Like the replies above state, they seem to work the best in these cars. I haven't even tried any other brand plugs in my DSM's (I've always like NGK in everything), but my cousin tried autolites and he had them actually break on two different occasions -- the porcelain dropped down in the center.

They are also OEM

Proper heat range, large electrode, good quality. Use the search button there are a thousand discussions.

A buddy of mine a long time ago did a long extended test. He asked the same question. He ran probably over 50 different type of plugs on the same motor and would check them all at the same time. Ran the same tune also. The plug that would hold up the most was always an NGK.

Myself has had issues with other brand plugs. They seem to fail quicker for some reason.

To quote the guy at advanced auto parts by house, "You want ngk's, ngk's make those imports fly". Lol

Lofer said:

To quote the guy at advanced auto parts by house, "You want ngk's, ngk's make those imports fly". Lol

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The transistor electronics, being designed by MITSU engineers for both "4G" series motors, chose NGK's to match what the motor's need for the most effective and maximum operation.

You might say - "to have a balance in operation"

You throw aftermarket, or outrageous plugs in that thing, you'll offset that balance and will hurt the needed effectiveness of the operation.

-DSM

lets just say autolight double platinums melted down in my stock motor under extended boost conditions and melted a hole in my #3 piston. hello stroker build =]

NGK's cost less, work great and it give's me an excuse to change them every 15k or less.

NGKs FTW...

I wish I had takn pics of some bosch double platinums a guy brought in when I worked at Oreillys. He had them in a 93 chevy blazer with the 4.3L MPI, he initially called and spoke with me about warranty on them I stated they had a 90day warranty against manufacture defects. He said well the are melted would that make them defective... Long pause... I stated to just bring them in and I would "take care" of him. I was the nite shift MGR and sometimes we did small things to keep customers happy.

Well when he threw thm on the counter I about shit my pants. The goofy redneck was correct they were in fact melted. I have never seen this in all my years around parts and cars but the electrode looked like somebod had dipped it in muratic acid and then took a torch to it. Im assuming they were running way to hot, but they were the plug recommended for the vehicle according to Bosch. From that point on I never even offered them as a choice when people asked.

If you ever work on GM cars look at the AC DELCO platinum plugs. Most of the OEM plugs have NGK stamped into the base of the plug. They make a few other lines as well such as DENSO. Or Denso makes NGK either way just run them if not your loss

DSM1G90 said:

The electronic, being designed by MITSU engineers, chose NGK's to match what the motor's need for the most effective and maximum operation.

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Exactly. No matter what the application, the OEM recommended plug is going to work the best. It is acceptable or sometimes necessary to go to a different heat range but that is the only change you want to make. All of the multiple tip performance plugs are a gimmick. Plugs will not result in a power gain. If someone tells you they felt the difference after changing to a different plug it is because they replaced worn out plugs for new ones, not because of the brand or style of plug.

2point3Tsi said:

lets just say autolight double platinums melted down in my stock motor under extended boost conditions and melted a hole in my #3 piston. hello stroker build =]

NGK's cost less, work great and it give's me an excuse to change them every 15k or less.

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Platinum plugs should not be used in forced induction applications.

Tried Bosch once, will never use anything but NGK's again. Like viper said, They are OEM anyways.

they are cheap and good plugs. thats all

Japanese cars deserve Japanese plugs. I'm running Densos currently.

I just like running whats supposed to be in there. If they are good enough for the manufacturer to put them in there, then they are good enough for me to use.
I use NGKs in my honda and my clipses. Just like I always run AC's in GM's.

I have a 5.3 silverado with 150,000 miles on it with the original AC Delco plugs and wires

Cheap – Easily Excisable - Works Great= Why Would You Want Anything Else?

i run denso and ngk, (not at the same time though, ) both brands are good for our cars

if it works why mess with it? you can spend hundreds of dollars trying different plugs.. or you can go with what works. if your making 600+ hp sure try diffrent plugs. or if you make 400 pay 8 bucks for a set and run bpr7es plugs with the proper gap for your boost setting and send it..

My understanding is that any plug of likeness will work. NGK just happens to be a good price, a good product and the OEM equipment ( well not quite, we like the bpr6es, 7es etc. The stockers were a dual pronged setup that are pre-gapped ).
Myself, and even a Wiseman, have used Autolite 63 coppers in place of the NGK's with fine results. But I only buy them if I can't get the NGK's. I feel that the NGK is of better quality since I've never heard of the porcelin getting destroyed for no good reason, unlike Autolite plugs. But whose to say. I've never toured either facility.

ANYWAYS, my understanding of why we use the cheapy, copper, plain jane, no frills spark plugs is because the simple copper electrode cools down the fastest. The iridium and platinum designs retain heat longer, and thus remain hotter when in operation ( I'd think not to be confused with heat range). This leads to misfires, detonation and other undesirable results and is essentially why we don't spend money on the "fancy" plugs. The cheap ones work wonderfully and have for over a decade.
Please correct me if I'm off the wall here.

I have a 5.3 silverado with 150,000 miles on it with the original AC Delco plugs and wires

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...which should be changed out down the road.... Plug wires, with that many miles, do get tired as well. Plus, the plugs should, at least be checked due to gap differences being changed due to eventual wear ... or just put in new ones...

a Wiseman, have used Autolite 63 coppers in place of the NGK's with fine results. But I only buy them if I can't get the NGK's. I feel that the NGK is of better quality since I've never heard of the porcelin getting destroyed for no good reason, unlike Autolite plugs.

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Same thing as doing FRAM oil filters - from the same parent company.

Why take the risk?

ANYWAYS, my understanding of why we use the cheapy, copper, plain jane, no frills spark plugs is because the simple copper electrode cools down the fastest. The iridium and platinum designs retain heat longer, and thus remain hotter when in operation ( I'd think not to be confused with heat range). This leads to misfires, detonation and other undesirable results and is essentially why we don't spend money on the "fancy" plugs. The cheap ones work wonderfully and have for over a decade

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Copper is a tons better conductor of electricity than is platinum or iridium. You take a VOM and put it across a regular NGK (put a piece of wire across the tip and electrode to close the circuit) and you have very low resistance, even when they do have a resistor in the plug tower. BUT, you do the same with the other two and the resistance value really hits the ceiling and this is where you get these problems as you listed above- plug can't fire too well with our ignition system AND which overloads our system trying to fire through all of this extra resistance with these other two kinds of plug...and you can start kissing your ECU, coil and power transistor goodbye.

NOW you know why MITSU engineers loved using NGK's ....

Why do we run copper wiring in our homes and use copper wiring in our cars? BETTER CONDUCTOR of ELECTRCITY!

(NOW, if we really wanted juice to flow quick, is to use either gold or silver - why the add-on components in our computers have gold contacts .... )

Good luck, all - DSM

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Lofer said:

To quote the guy at advanced auto parts by house, "You want ngk's, ngk's make those imports fly". Lol

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but it's not just imports that fly w/ em, the srt-4's do too. that's all i used in mine a couple yrs ago and never had a problem