Spark Plugs for 4G63T? [Merged 12-28-2021]

[TsiRacer93]

yea so my cars got like 100,000 miles on it, what are some good plugs to be using? i was thinkin bosh 4s but someone told me they would be bad for my car..

 

[ddavisaf]

This annoys me. Every single day I have to tell someone to take out their brand new Bosch platinum spark plugs. Everytime I have to tell someone this it's because Auto Zone, or Checkers, or Kragen, or Advanced Auto, or any other number of auto store tells their customer it's the "stock plug".
THIS IS A LIE.
DSM came STOCK with NGK plugs.
They tell you this little bit of info for one reason.
They make extra money for selling Bosch Platinum spark plugs. Not alot, but it adds up.
Quit buying spark plugs that don't begin with the letter N and end with the letter K.

Everytime your car starts stuttering or stumbling under boost it's because of a poor ignition.
99% of the time it's because you've got the wrong spark plugs.
I pay $1.09 a piece of my plugs. I've never ever had a problem. Don't use Iridium you turbo charged people out there. Don't use platinum, don't use plutonium. Throw the flux capacitors away and use those cheap $1.09 copper electrode spark plugs by the name of NGK BPR6ES and gap them at .028".

Rant over. Thank you.

 

[MrBoxx]

I have a question? Murray's Discount Auto Parts carries NGK and when I asked for the plugs, they told me that stock for my car is the NGK BRP6EKN or something to that effect. Is there a difference, or should I just ask for the ES suffix plugs?

 

[91talon27]

I agree with the NGK plugs I have pretty much tried them all at one time or another in a car of mine. NGK always runs better in my opinion. Never have had any problems out of them.

 

[Defiant]

The stock plug was the dual-electrode plug. An exercise in pointlessness.

 

[Fabian972]

Now i feel bad after having had paid 12.99 per plug for my denso's but i have no complaint

 

[dr1665]

Quit buying spark plugs that don't begin with the letter N and end with the letter K.

I can't wait to go to Autozone and pick up a fresh set of New Bosch Platinum 4000K.

They are in the business of moving parts - not educating their customers. Caveat emptor. If you're naive enough to think that some spark plug that has only been around three years is the same that originally came in your ten year old car, you deserve the shitty sputtering convulsions that go along with it.

 

[speedy13]

This annoys me. Every single day I have to tell someone to take out their brand new Bosch platinum spark plugs. Everytime I have to tell someone this it's because Auto Zone, or Checkers, or Kragen, or Advanced Auto, or any other number of auto store tells their customer it's the "stock plug".
THIS IS A LIE.
DSM came STOCK with NGK plugs.
They tell you this little bit of info for one reason.
They make extra money for selling Bosch Platinum spark plugs. Not alot, but it adds up.
Quit buying spark plugs that don't begin with the letter N and end with the letter K.

Everytime your car starts stuttering or stumbling under boost it's because of a poor ignition.
99% of the time it's because you've got the wrong spark plugs.
I pay $1.09 a piece of my plugs. I've never ever had a problem. Don't use Iridium you turbo charged people out there. Don't use platinum, don't use plutonium. Throw the flux capacitors away and use those cheap $1.09 copper electrode spark plugs by the name of NGK BPR6ES and gap them at .028".

Rant over. Thank you.

silence....clap...clap...clap...clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap,clap, AND THE CROWD GOES WILD!!!

 

[RamenPride]

I have a question? Murray's Discount Auto Parts carries NGK and when I asked for the plugs, they told me that stock for my car is the NGK BRP6EKN or something to that effect. Is there a difference, or should I just ask for the ES suffix plugs?

BPR6EKN is the stock 2G plug

BPR6ES is the stock 1G plug, which works just fine and is a lot cheaper.

 

[95AWD_TSI_TALON]

I agree. I work at Advance and I HATE BOSCH. Its so funny when people come in thinking the +4's will make CRAZY horsepower!!!!!! Anyways I Always try to sell um the plugs the need (ford-autolite...ect)
Matthew

 

[Mist3r Spool]

Good stuff. While we are on the topic, I'm using BPR7ES plugs and boosting 20PSI w/550cc Walbro 255, etc. Should I switch back to 6s? Sorry to ask such a noob question that has been asked a million times but my browser is freezing and I can't get to the search page.

 

[Old Mitsu Tech]

You are just one range cooler than stock. The lower the number the hotter the plug in NGK. I learned about NGK in the early Eighties in a marine dealership. I'm also a boat mechanic. But that's another story for another day. We were having fits with Champions and went to NGK. Problem solved. I've experimented with several "esoteric" plugs and found that good old stock NGK's are as good as far as durability, fuel milage etc. Besides who wants to give a left nut for a spark plug?

 

[ddavisaf]

Good stuff. While we are on the topic, I'm using BPR7ES plugs and boosting 20PSI w/550cc Walbro 255, etc. Should I switch back to 6s? Sorry to ask such a noob question that has been asked a million times but my browser is freezing and I can't get to the search page.

No, more fuel means you will need a colder plug. 7's are the correct plug for your modifications.

 

[ddavisaf]

The stock plug was the dual-electrode plug. An exercise in pointlessness.

Stock replacement plugs last time I visited Satan was a single electrode NGK plug. Maybe they decided intellegence IS a virtue...

 

[ddavisaf]

I can't wait to go to Autozone and pick up a fresh set of New Bosch Platinum 4000K.

And for my last quote of the thread.... Bah!!

 

[Ender]

I agree. I work at Advance and I HATE BOSCH. Its so funny when people come in thinking the +4's will make CRAZY horsepower!!!!!! Anyways I Always try to sell um the plugs the need (ford-autolite...ect)
Matthew

I work at Advance too. I have yet to get a DSM person come in but when they do I always know which ones to sell them I don't personally care for the Bosch Platinums. And for my Beretta (daily driver) and Jeep, I just run Autolites. Works fine.

 

[ncaligst98]

Well today i went out and got some new sparkplugs some NGK BPR6ES, the ones i pulled out were NGK R BPR6EKN, the tips on the spark plugs are different the ones i pulled out have two shock hook things (dont know the name) and the new ones only have one, is there a difference performance wise and which is better?

 

[GSXTuner]

bpr6es is what i have in mine.. i believe the ekns have the two tip for a theoretical bigger spark. i dont mess with those.. oem plugs are the way to go...

 

[Defiant]

The dual-electrode are factory spec. They're also pointless. Only one electrode is going to take the spark, while the other one just sits there. You made the correct choice.
Gap to .028". There are no pre-gapped spark plugs.

 

[Addicted2DSM]

So whats special about the BPR6ES? I run BPR7ES and it works for me. I know the BPR8ES are best for stock boost.

 

[ddavisaf]

So whats special about the BPR6ES? I run BPR7ES and it works for me. I know the BPR8ES are best for stock boost.

Other way around.
BPR8ES are for highly modified engines.
BPR7ES slightly modified
BPR6ES stock

 

[gurmanator]

you want a one step colder plug than stock to keep cylinder temp down.

 

[ncaligst98]

The dual-electrode are factory spec. They're also pointless. Only one electrode is going to take the spark, while the other one just sits there. You made the correct choice.
Gap to .028". There are no pre-gapped spark plugs.

The guy at the shop told me to gap them at .032 (which i did) do i have to go back and re gap them?

 

[Defiant]

you want a one step colder plug than stock to keep cylinder temp down.

Plug "heat" has absolutely no effect on cylinder temperatures. The heat range on spark plugs applies only to the ability of the spark plug to conduct heat away from the tip.
Running plugs of too low a heat range will lead to fouling and misfires. Running plugs that are too high a heat range will lead to plug damage.
It takes a fair bit of high tuning and extreme use before BPR6 plugs can't keep up. And it will be the extraordinarily rare motor that will keep 8s happy.

 

[SkyLineGtR-R34]

The guy at the shop told me to gap them at .032 (which i did) do i have to go back and re gap them?

yup
as Defiant already said, .028

 

[r10performance]

I run BPR7ES full time! Gap anywhere from .28-.30