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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > Spark plugs N54 335i - Bosch or NGK



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      04-14-2014, 01:24 AM   #1
djpro1
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Spark plugs N54 335i - Bosch or NGK

Hi guys

I was wondering what spark plugs you recommend for the N54 335i e93? I see there are two popular choices: The BOSCH and the NGK.

I plan to put in a JB4, DCI and DPS.
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      04-16-2014, 01:00 AM   #2
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Bosch is likely OEM supplier but NGK has a cooler logo...
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      04-16-2014, 02:04 AM   #3
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The NGK's have been known to give more power and by memory are slightly cheaper, but there have been a few negative reports. Having said that there have also been negative reports from the bosch plugs...

At the end of the day, I'm sure there probably aint a great deal of difference I would tend to stick with the oem bosch plugs personally.
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      04-16-2014, 02:12 AM   #4
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I went with Bosch and swapped all 6 recently. Solved the misfiring issue.
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      04-16-2014, 03:49 AM   #5
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I trust what BMW uses, so I use Bosch spark plugs.
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      04-16-2014, 07:12 AM   #6
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I have NGKs in mine. Runs perfectly. Much easier to gap down when running higher power.
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      04-16-2014, 05:17 PM   #7
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I could start something here, we all know that the Japs make the best cars THEY JUST GO FOREVER so it stands to reason that they make the best plugs.
I can tell you from my Dyno tuning 30 odd years experience that NGK are the best plugs for most applications, but whether or not they work in the Beemer i can't say.
Though i do have a set of NGK PLZKBR7A-G in the glove box, been there for about a year ready for testing, so maybe its time to fire up the dyno and have a play.
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      04-16-2014, 05:56 PM   #8
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+1 to NGK. Fairly straight forward when gapping. No more misfires!
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      04-16-2014, 08:01 PM   #9
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+1 Bosch, fixed my misfires,
bmw uses it as stock so i just used it as you cant reallygo wrong.

end of the day, both go well.
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      04-16-2014, 09:03 PM   #10
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Thanks for the response guys Ordering a set of some Bosch ones
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      04-16-2014, 09:40 PM   #11
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Quote:
Originally Posted by Peter@Advan View Post
I could start something here, we all know that the Japs make the best cars THEY JUST GO FOREVER so it stands to reason that they make the best plugs.
I can tell you from my Dyno tuning 30 odd years experience that NGK are the best plugs for most applications, but whether or not they work in the Beemer i can't say.
Though i do have a set of NGK PLZKBR7A-G in the glove box, been there for about a year ready for testing, so maybe its time to fire up the dyno and have a play.
Please let us know and keep us updated, as I'm in the position to change my sparks soon and tossing up between NGK or OEM Bosch.

Never had the background test/studies to say which is better preforming so it would be good to see and review the two from you.
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      06-12-2014, 08:42 PM   #12
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Quote:
Originally Posted by Peter@Advan View Post
I could start something here, we all know that the Japs make the best cars THEY JUST GO FOREVER so it stands to reason that they make the best plugs.
I can tell you from my Dyno tuning 30 odd years experience that NGK are the best plugs for most applications, but whether or not they work in the Beemer i can't say.
Though i do have a set of NGK PLZKBR7A-G in the glove box, been there for about a year ready for testing, so maybe its time to fire up the dyno and have a play.
A fair test would be to Dyno with new NGKs. Take those out and put in new Bosch OEM plugs and re-Dyno. Comparing new NGKs to old OEMs is bad science.
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      06-14-2014, 04:30 AM   #13
Peter@Advan
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Quote:
Originally Posted by Jeffman View Post
A fair test would be to Dyno with new NGKs. Take those out and put in new Bosch OEM plugs and re-Dyno. Comparing new NGKs to old OEMs is bad science.
OK i will do some back to back testing, just as soon as my new LCI tail lights turn up, as i sold my old lights i cant drive my car.
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