*Urgent* What plugs/gap needed for tuned N55? OEM continues to break in 5th/6th gear!

YouAreMyWorld · 03-07-2017, 05:21 PM

OEM plugs keep on breaking and causing misfires. Which plugs are needed to prevent this?

Logs: http://datazap.me/u/youaremyworld/lo...og=0&data=3-21

Log 2: http://datazap.me/u/youaremyworld/lo...og=0&data=3-21

Log 3 (multiple logs in one): http://datazap.me/u/youaremyworld/lo...og=0&data=3-21

Plugs keep on breaking when in 5th/6th gear and pushing foot down at cruising speeds when at 60mph/2,000-2,500rpm! (I've read that most plugs that are used in the N54 can be used for the N55 as well).

Thank you!

WJMSprtXDrive · 03-07-2017, 06:17 PM

I was told .0022 gap on NGK Laser Iridium plugs.

Jeff@TopGearSolutions · 03-07-2017, 06:20 PM

.022" on NGK 5592/95770

BSM n54iS · 03-07-2017, 06:20 PM

^ That's the gap for tuned N54's for sure, running REALLY high boost maybe even .020". But check if thats the same for N55's...

YouAreMyWorld · 03-07-2017, 06:25 PM

Thanks you guys, just had them installed gapped to .022 as recommended

Will post back momentarily after test drive.

flexbrah · 03-08-2017, 09:01 AM

Quote:

Originally Posted by YouAreMyWorld

Thanks you guys, just had them installed gapped to .022 as recommended

Will post back momentarily after test drive.

How were they? I'm getting corrections on my logs as well on new OEM plugs so I definitely need to replace them -- was thinking of NGK gapped at .02

YouAreMyWorld · 03-08-2017, 12:17 PM

Quote:

Originally Posted by flexbrah

How were they? I'm getting corrections on my logs as well on new OEM plugs so I definitely need to replace them -- was thinking of NGK gapped at .02

Waiting to hear back from Ken as we're working on keeping my fuel pressure from dipping below 2,000psi. Immediately after installation though, my car felt more "lively" as if a bit more power is on tap. Definitely feels great and no more misfires.

Also, Ken (WedgePerformance/my Tuner) recommends gapping to .018", but unfortunately I wasn't aware of that until after installation. I personally should be fine since I'm on stock turbo (N55), but you High Boost N54 guys would probably be best served gapping to .018" as a "replace and forget" mentality.

Here's a log: http://datazap.me/u/youaremyworld/lo...42-43-44-45-46

Running aggressively on feeble 91 ACN octane. Car feels very strong and happy, but we're not quite done yet.

unrealii · 03-08-2017, 01:06 PM

Our cali gas sucks. I run stage 1 and was getting a lot of corrections. My car was much happier when I switched to costco 91 because there could be up to 10% ethanol in it

Jeff@TopGearSolutions · 03-08-2017, 04:01 PM

Quote:

Originally Posted by unrealii

Our cali gas sucks. I run stage 1 and was getting a lot of corrections. My car was much happier when I switched to costco 91 because there could be up to 10% ethanol in it

Costco is also Top Tier Gas, so definitely better then other stations. I think Chevron may be in your area too, also Top Tier.

03-07-2017, 05:21 PM	#1
YouAreMyWorld ///Project Aura 390 Rep 889 Posts Drives: Mineral White ///M-Sport 335i Join Date: Feb 2015 Location: Los Angeles iTrader: (0)	Urgent What plugs/gap needed for tuned N55? OEM continues to break in 5th/6th gear! OEM plugs keep on breaking and causing misfires. Which plugs are needed to prevent this? Logs: http://datazap.me/u/youaremyworld/lo...og=0&data=3-21 Log 2: http://datazap.me/u/youaremyworld/lo...og=0&data=3-21 Log 3 (multiple logs in one): http://datazap.me/u/youaremyworld/lo...og=0&data=3-21 Plugs keep on breaking when in 5th/6th gear and pushing foot down at cruising speeds when at 60mph/2,000-2,500rpm! (I've read that most plugs that are used in the N54 can be used for the N55 as well). Thank you!
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03-07-2017, 06:17 PM	#2
WJMSprtXDrive Private 49 Rep 79 Posts Drives: F15 xDrive50i M-Sport Join Date: Feb 2017 Location: NYC now DC Metro iTrader: (0) Garage List 2011 BMW E90 335i x ... [0.00] 2014 BMW X5 [0.00]	I was told .0022 gap on NGK Laser Iridium plugs. __________________ 2011 E90 335i xDrive 6AT Performance Edition Package, M-Sport, TTFS Tune, VRSF 3.5" Catted DP, Active Autowerke CP, Turner Motorsport Strut Tower Brace, Hawk HP+, Bilstein B6, Alpina B3 TCU Flash, K&N ---- 2014 F15 X5 xDrive50i M-Sport, RSE, 3rd Row
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03-07-2017, 06:20 PM	#3
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	.022" on NGK 5592/95770
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03-07-2017, 06:20 PM	#4
BSM n54iS Brigadier General 2685 Rep 4,202 Posts Drives: '11 335is \| '16 Macan Turbo Join Date: Aug 2015 Location: Everywhere and Nowhere iTrader: (7)	^ That's the gap for tuned N54's for sure, running REALLY high boost maybe even .020". But check if thats the same for N55's... __________________ '11 335is BSM MT "BMW Performance Editon" \| '16 Porsche Macan Turbo GruppeM CF Intake \| AR Resonated DP \| ER CP \| Turbosmart RacePort BOV \| Cobb FMIC \| RB Inlets \| RB External Mishi/Turner OCC \| Michelin PS4 \| BMW Performance Springs/Bilstein B8 + Dinan & M3 bits \| BMW Brembo BBK \| BMW Performance CF Spoiler \| BMW Performance CF Lip \| BMW Performance Alcantara \| PS Designs GTS Armrest \| AG H6-40 \| Rear Seat Delete
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03-07-2017, 06:25 PM	#5
YouAreMyWorld ///Project Aura 390 Rep 889 Posts Drives: Mineral White ///M-Sport 335i Join Date: Feb 2015 Location: Los Angeles iTrader: (0)	Thanks you guys, just had them installed gapped to .022 as recommended Will post back momentarily after test drive.
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03-08-2017, 01:06 PM	#8
unrealii Captain 75 Rep 630 Posts Drives: '09 335 E93 6MT Join Date: Mar 2011 Location: Socal iTrader: (3) Garage List 2002 Toyota 4Runner [0.00] 2009 BMW 335I [10.00]	Our cali gas sucks. I run stage 1 and was getting a lot of corrections. My car was much happier when I switched to costco 91 because there could be up to 10% ethanol in it __________________ Convertible \| Manual \| M-Sport \| MHD Stage 1 + FMIC \| 335is Clutch \| ER CP \| RB Inlets \| VRSF 5" Stepped FMIC \| M3 F/R Control Arms \| KW V3 \| Hawk HPS Pads \| Stoptech Slotted Rotors \| Blackvue DR650-2CH Dash Cam \| LCI Taillights
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