Advice: spark plugs

Houranimd49 · 07-05-2021, 11:40 AM

+1 on the OEM plugs.... fcpeuro

ziekxq · 07-05-2021, 01:03 PM

Quote:

Originally Posted by Razmataz1

Guys

I have a 2011 Bmw 535 xdrive with RKtunes. It is recommended that I use step 2 colder spark plug which I got in Jan\2020 - NGK 97506 Plugs SILZKBR8D8S

I have seen NGK 97506 Plugs SILZKBR8D8S as step 1 and step 2 colder plugs, I think their Step 2 colder for 2011 Bmw F10 N55 engine. Can someone confirm?

Also these should be gapped at 20 per what I have read? If I leave gap at stock what is the negative impact to car’s performance.

Also I had cylinder 6 misfire code and I replaced all 6 of my ignition coils and issue so far seems to be resolved but should I also replace the spark plugs? I have Fcp lifetime warranty on the ngk 97506 plugs.

NGK 1 Step Colder 97506 Plugs gapped at .22 is best. They are 1 step colder for us n55 and 2 step colder for n54s. I run them at that gap on my 2011 535i xdrive with ps2.

$howtime456 · 07-05-2021, 02:53 PM

+1

07-05-2021, 11:40 AM	#23
Houranimd49 First Lieutenant 252 Rep 333 Posts Drives: F10 535i xDrive, F25 xDrive35i Join Date: Apr 2019 Location: MI iTrader: (0) Garage List 2012 BMW X3 xDriv ... [9.25] 2011 BMW 535i xDrive [9.50]	+1 on the OEM plugs.... fcpeuro
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07-05-2021, 02:53 PM	#25
$howtime456 Major 301 Rep 1,230 Posts Drives: BMW 640i Join Date: Mar 2017 Location: NY iTrader: (0)	+1 __________________ N55 GENERAL David Shoup Tuned Fully Built By Miami Engines/Project Motorworks Precision 6266 On Steroids
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