[gordopizza]

Hi all,

I purchased some NGK 97506 plugs and currently running a stock tune. Should I return and just get the OE replacements? I understand that these run a step colder. I am not sure how that would affect the N55 running unmodified.

Thanks!

[///393]

These aren’t needed and won’t bring any benefit. Stick with OEM.

[gordopizza]

I think an additional question is would it bring any harm to the engine?

[F87source]

Originally Posted by wilson kop

These aren’t needed and won’t bring any benefit. Stick with OEM.

+1

Originally Posted by gordopizza

I think an additional question is would it bring any harm to the engine?

No it won't harm anything, but it could negatively impact idling as a plug that is too cold causes incomplete combustion.

[KevM2]

Will be just fine. That's what I installed on mine without any issues and this is the one recommended by ngk

[ZM2]

If you decide to use them, run the plug gap out of the box. Do not gap them down!

[gordopizza]

So I shouldn't gap them to the BMW spec? It's .028" I believe.

[ZM2]

Originally Posted by gordopizza

So I shouldn't gap them to the BMW spec? It's .028" I believe.

https://f87.bimmerpost.com/forums/sh...7&postcount=28