NGK 97596 Idle Issues

[Trevorstein]

Originally Posted by andrei.m4

Oem plugs came gapped 0.028 if i remember corectly, someone tried 0.027-0.028 gap at ngk? I have same ‘shaky’ idle with ngk at 0.022.
Bm3 stage2 agg 93oct stock turbos.

I believe OEM come in at .032 gap. Or at least the NGK97506 I bought, as OEM replacement, do.


Cheers!

[Trevorstein]

Originally Posted by Trevorstein

I believe OEM come in at .032 gap. Or at least the NGK97506 I bought, as OEM replacement, do.


Cheers!

Can these with this gap be used on a stock un-tuned car?


Cheers!

[Izzmeister]

Originally Posted by Trevorstein

Can these with this gap be used on a stock un-tuned car?


Cheers!

I cross referenced the oem plugs to NGK....nothing
The 97506 are a step colder...someone already commented that at .028 they behave the same.

[TR930]

Originally Posted by Izzmeister

I cross referenced the oem plugs to NGK....nothing
The 97506 are a step colder...someone already commented that at .028 they behave the same.

Might be something to the fake NGK comment earlier.

[Izzmeister]

Originally Posted by TR930

Might be something to the fake NGK comment earlier.

Originally Posted by TR930

Might be something to the fake NGK comment earlier.

I saw something YouTube about that. Looked at my plugs and compared them to what the counterfeits look like, mine look legit. Came with the right part numbers and lettering on the boxes, cardboard protection sleeves not plastic and the lettering was centered. The electrode had a very pointy iridium looking tip also. I'm betting they're legit, sourced them on Amazon but the vendor is actually local in Miami. Maybe the tuners at bm3 are just playing it safe, think the stage 2 bm3 93 octane tune is north of 30 psi easy...that's alot of boost.

[Izzmeister]

Originally Posted by Izzmeister

I cross referenced the oem plugs to NGK....nothing
The 97506 are a step colder...someone already commented that at .028 they behave the same.

Originally Posted by TR930

Might be something to the fake NGK comment earlier.

Originally Posted by Izzmeister

I cross referenced the oem plugs to NGK....nothing
The 97506 are a step colder...someone already commented that at .028 they behave the same.

Meaning the stock plugs don't have an NGK equivalent. What's avail is the 97506 which are a step colder.

[rborane]

Are you going back to stock plugs? You should see good results with fresh OEM plugs since you hadn’t changed them prior.

[Trevorstein]

Originally Posted by Izzmeister

I cross referenced the oem plugs to NGK....nothing
The 97506 are a step colder...someone already commented that at .028 they behave the same.

You seem to be citing yourself (in subsequent posts) to build an argument.

Who (cite/link?) commented??

Originally Posted by TR930

Might be something to the fake NGK comment earlier.

Which (cite/link?) one?

[Izzmeister]

Originally Posted by Trevorstein

You seem to be citing yourself (in subsequent posts) to build an argument.

Who (cite/link?) commented??

Which (cite/link?) one?

Originally Posted by Trevorstein

You seem to be citing yourself (in subsequent posts) to build an argument.

Who (cite/link?) commented??

Which (cite/link?) one?

Not trying to build an argument, don't post alot so not too handy with this app. The car jolts at idle, fact. I'm changing the plugs back to oem, fact. Just getting opinions from ppl on here, that's all.

[sna66]

I replaced my Bosch with the 97506 NGK, running bootmod3 CS+ tune gapped at .025 ( they came this way). I don't experience any jolts . I got them form FCP so They should be real

[andrei.m4]

One more thing at the end of the tight spark i think they can have different positions, on one site it says bosch plugs for my car have the position of spark at 7 mm and on ngk 97506 it says position of spark is 8mm, so i think here is an mistake. When it is torqued it stay in diferent position, this site also says this Ngk spark is not for our car

[TR930]

Do these plugs have different torque values ( indexing to injector)?

[andrei.m4]

Tomorrow i will install new bosch spark plugs stock gap 0.028. I will do a review tomorrow if idle change.

[Trevorstein]

Originally Posted by Trevorstein

I believe OEM come in at .032 gap. Or at least the NGK97506 I bought, as OEM replacement, do.


Cheers!

[Trevorstein]

Bottom line:

* "NGK97506"

Will this work as an OEM replacement for a stock ("F8x") M4?

If so, what would the proper gap be for it to do so? Do (can) they need (be)to re-gapped?

Anyone with "stock" first hand experience??

[satinghostrider]

Originally Posted by Trevorstein

Bottom line:

* "NGK97506"

Will this work as an OEM replacement for a stock ("F8x") M4?

If so, what would the proper gap be for it to do so? Do (can) they need (be)to re-gapped?

Anyone with "stock" first hand experience??

I don't see why you would want to change out to the NGKs for a stock tune. Most go to NGK because it is one step colder when running higher boost. The stock plugs work perfectly fine for a stock car though there has been reports of it cracking. Not sure if these cracking is due to tunes or not.

[Trevorstein]

Originally Posted by satinghostrider

I don't see why you would want to change out to the NGKs for a stock tune. Most go to NGK because it is one step colder when running higher boost. The stock plugs work perfectly fine for a stock car though there has been reports of it cracking. Not sure if these cracking is due to tunes or not.

Only reason (M4 - Stock) ...

I heard they were better plugs than the (OEM/stock replacement) "Bosch's" and since I will be changing these anyways, due to time (36 Mos.) not mileage, I thought I would upgrade.

They're twice the price of - ZMR5TPP330.

Please correct me If I am wrong here!?!


Cheers!

[andrei.m4]

Plugs seems to be a little different, as i sayd when they are torqued ngk stay almost in opposite way than bosch, as i can see at ngk black from fuel burn is in the back and at bosch in front. This can be a big difference.. for a direct injection engine. One more strange things, i changed 2 times spark plugs at this car and every time i torqued them at 23nm but now when i opened this ngk to replace again with bosch they was loosened around 10 degrees from touch point.
Also last time car idle was very unstable.

[mark5092]

Anybody tried these plugs or know anything about them? If you call FCP Euro and give them your VIN, they say that the BMW parts catalog references them as a plug that works for our vehicles. I’m trying to confirm this with Bosch.

https://www.fcpeuro.com/products/bmw...sch-0242145541

[rborane]

Originally Posted by mark5092

Anybody tried these plugs or know anything about them? If you call FCP Euro and give them your VIN, they say that the BMW parts catalog references them as a plug that works for our vehicles. I’m trying to confirm this with Bosch.

https://www.fcpeuro.com/products/bmw...sch-0242145541

That part number is the same as the one that shows on RealOEM. I say give them a shot.

[andrei.m4]

After 300km of drivng i can tel defently the idle is more smooth but i don t know if the issue is with ngk or with gap. I am back to bosch oem and oem gap on bm3 stage2 agg 93 and i am happy, i let lower gap for guys who use ethanol or other high modifications. Oem gap is 0.8mm, my gap on ngk was 0.55.

[Izzmeister]

Originally Posted by andrei.m4

After 300km of drivng i can tel defently the idle is more smooth but i don t know if the issue is with ngk or with gap. I am back to bosch oem and oem gap on bm3 stage2 agg 93 and i am happy, i let lower gap for guys who use ethanol or other high modifications. Oem gap is 0.8mm, my gap on ngk was 0.55.

Originally Posted by andrei.m4

After 300km of drivng i can tel defently the idle is more smooth but i don t know if the issue is with ngk or with gap. I am back to bosch oem and oem gap on bm3 stage2 agg 93 and i am happy, i let lower gap for guys who use ethanol or other high modifications. Oem gap is 0.8mm, my gap on ngk was 0.55.

Awesome!
So on the stock plugs did you have to gap them or they came pre-gapped? Mine should be here today.