N55 Spark plugs and maintenance - BMW 3-Series (E90 E92) Forum

FrankiE90 · 01-09-2013, 08:11 PM

How many you guys changed ur plugs
every 20k?
did mine at 60K.
any noticeable difference.

just want to see the kind of maintenance
u guys are doing.
any valve cleaning?

Suds · 01-09-2013, 08:32 PM

I changed mine at 23k miles, was having a misfire after installing Cobb S1 Aggressive.
I had run Dinnan S2 for about 12k miles before i went to Cobb.
Misfire is now gone!

518N55 · 01-09-2013, 09:54 PM

Replaced at 28k

FrankiE90 · 01-09-2013, 10:00 PM

Quote:

Originally Posted by Suds

I changed mine at 23k miles, was having a misfire after installing Cobb S1 Aggressive.
I had run Dinnan S2 for about 12k miles before i went to Cobb.
Misfire is now gone!

ur a good man -
for changing em early.

felt a difference after changing mine.
night and day.
omg -

how did they look after 23K -
i know mine look like chit.
the dealer keep giving me the wrong plugs - n54 ones.
finally told them to use my VIN.

btw, how do u like ur Cobb tune over the Dinan.
is ur throttle response past 3k in 2nd and 3rd feel any different.
lot more dramatic in the mid range i'm guessing.

FrankiE90 · 01-09-2013, 10:01 PM

Quote:

Originally Posted by 518N55

Replaced at 28k

tune, no tune.
how's ur driveablity - same, different, don't care.

Suds · 01-09-2013, 10:13 PM

I have enjoyed both tunes, mainly from the added torque with a 6mt.
On the dyno the Cobb S1 gave simular numbers to the Dinnan S2.
The Cobb S1 Aggressive added about 20 + lb-ft torque at the low end and 20 to 30 hp at the top end over the Dinnan.
Both tunes are very smooth and fun to drive.

FrankiE90 · 01-10-2013, 01:20 AM

u dyno'd ur bimmer with the Cobb.
would be interested in seeing the curves.

must be fun at full wot. are u finding urself short shifting with the n55 to be in the powerband w Cobb?

theriz · 01-10-2013, 01:26 AM

You need a new fuel pump.

Dozhdbog · 01-10-2013, 01:30 AM

After installing the the stage 2 PPK, my dealership affixed a sticker to the engine which reads "Change spark plugs at 35,000 miles".

Dozhdbog · 01-10-2013, 01:30 AM

Quote:

Originally Posted by FrankiE90

How many you guys changed ur plugs
every 20k?
did mine at 60K.
any noticeable difference.

just want to see the kind of maintenance
u guys are doing.
any valve cleaning?

You have 60k on your 2011???

FrankiE90 · 01-23-2013, 05:26 AM

Quote:

Originally Posted by theriz

You need a new fuel pump.

Who me? Lol.
Long crank - corrected itself.
I can hear the pump prime when I unlock the door.

It's still holding up-

Quote:

Originally Posted by Dozhdbog

You have 60k on your 2011???

Yes.

518N55 · 01-23-2013, 12:57 PM

full bolt on and meth, JB4 ISO w/ flex fuel wires

Drivability seems more smooth and throttle is sharper...

But I also didn't have a choice, the car was misfiring on old plugs. I think every 20k is a must

Dozhdbog · 01-23-2013, 02:50 PM

Quote:

Originally Posted by FrankiE90

Yes.

Damn, and I thought putting 35k on my 2011 in a year and a half was a lot.

ziominix · 01-24-2013, 12:47 PM

I'd also like to see that dyno with cobb. I've yet to see any independent results yet.

chrisk03 · 01-24-2013, 09:26 PM

Quote:

Originally Posted by Dozhdbog

After installing the the stage 2 PPK, my dealership affixed a sticker to the engine which reads "Change spark plugs at 35,000 miles".

Interesting. stage 1 PPK sticker I got said 50k miles. Prob trying to avoid changing under warranty...if that's the case, just put 60k miles instead.

Tony135 · 01-28-2013, 02:10 PM

Looks like I may need some spark plugs. I'm at 37K.

Goldenchild · 01-28-2013, 02:22 PM

Funny, I just called in to order my set also...and hot damn, that bitch is $34ish just for one plug from bmw!

01-09-2013, 08:11 PM	#1
FrankiE90 Major General Drives: 2011 E90 Space Gray™ Join Date: Feb 2008 Location: Pasadena, Ca Posts: 8,503 iTrader: (10)	N55 Spark plugs and maintenance How many you guys changed ur plugs every 20k? did mine at 60K. any noticeable difference. just want to see the kind of maintenance u guys are doing. any valve cleaning? __________________ FrankiE90 AKA:.[The TANK] *CLICK THE SIG 2011 335 E90 MTECH 6MT • KW V3 • INJEN Intake • Berk 4" DP • Vanguard V2 exhaust • Procede V5 • Stoptech BBK • RPI Scoops • Karbonwerk CSL Trunk • LUX H8 • 19" BBS LM • 18" BBS GT4
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01-09-2013, 10:13 PM	#6
Suds One Addict Drives: 2011 135i 6mt Join Date: Aug 2010 Location: Lone Star State Posts: 221 iTrader: (0)	I have enjoyed both tunes, mainly from the added torque with a 6mt. On the dyno the Cobb S1 gave simular numbers to the Dinnan S2. The Cobb S1 Aggressive added about 20 + lb-ft torque at the low end and 20 to 30 hp at the top end over the Dinnan. Both tunes are very smooth and fun to drive. Last edited by Suds; 01-09-2013 at 11:17 PM.

01-10-2013, 01:20 AM	#7
FrankiE90 Major General Drives: 2011 E90 Space Gray™ Join Date: Feb 2008 Location: Pasadena, Ca Posts: 8,503 iTrader: (10)	u dyno'd ur bimmer with the Cobb. would be interested in seeing the curves. must be fun at full wot. are u finding urself short shifting with the n55 to be in the powerband w Cobb? __________________ FrankiE90 AKA:.[The TANK] *CLICK THE SIG 2011 335 E90 MTECH 6MT • KW V3 • INJEN Intake • Berk 4" DP • Vanguard V2 exhaust • Procede V5 • Stoptech BBK • RPI Scoops • Karbonwerk CSL Trunk • LUX H8 • 19" BBS LM • 18" BBS GT4

01-10-2013, 01:30 AM	#9
Dozhdbog Major Drives: 2011 335i Sedan Join Date: Aug 2011 Location: Hollywood Posts: 1,008 iTrader: (0)	After installing the the stage 2 PPK, my dealership affixed a sticker to the engine which reads "Change spark plugs at 35,000 miles". __________________ 2011 E90 / Premium Package / Stage 2 PPK / Performance Suspension

01-24-2013, 12:47 PM	#14
ziominix Private First Class Drives: 2011 335i xDrive Coupe Join Date: Nov 2009 Location: WV Posts: 157 iTrader: (0)	I'd also like to see that dyno with cobb. I've yet to see any independent results yet. __________________ --2011 335i xDrive coupe-6MT --Premium/Sport/Cold Weather/Nav/Comfort Access/Harmon Kardon --JB4 Stage 2 : BMS intake : Active Autowerke exhaust : ER charge pipe : cdv delete : M Sport shift knob : 12% tint : clear bra

01-09-2013, 08:32 PM	#2
Suds One Addict Drives: 2011 135i 6mt Join Date: Aug 2010 Location: Lone Star State Posts: 221 iTrader: (0)	I changed mine at 23k miles, was having a misfire after installing Cobb S1 Aggressive. I had run Dinnan S2 for about 12k miles before i went to Cobb. Misfire is now gone!

01-09-2013, 09:54 PM	#3
518N55 Enlisted Member Drives: 2011 335i coupe Join Date: Mar 2012 Location: Upstate NY Posts: 38 iTrader: (0)	Replaced at 28k

01-10-2013, 01:26 AM	#8
theriz Colonel Drives: 335i Join Date: Feb 2011 Location: Ventura County, CA Posts: 2,830 iTrader: (0) Garage List 2011 335i M-Sport [2.00] 2009 X5 [5.00]	You need a new fuel pump.

01-23-2013, 12:57 PM	#12
518N55 Enlisted Member Drives: 2011 335i coupe Join Date: Mar 2012 Location: Upstate NY Posts: 38 iTrader: (0)	full bolt on and meth, JB4 ISO w/ flex fuel wires Drivability seems more smooth and throttle is sharper... But I also didn't have a choice, the car was misfiring on old plugs. I think every 20k is a must

01-28-2013, 02:10 PM	#16
Tony135 Major Drives: 2012 BMW 135i Join Date: May 2011 Location: SoCal Posts: 1,034 iTrader: (0)	Looks like I may need some spark plugs. I'm at 37K.

01-28-2013, 02:22 PM	#17
Goldenchild Private First Class Drives: N55 e90 335xi Join Date: May 2012 Location: York, Pa Posts: 140 iTrader: (0)	Funny, I just called in to order my set also...and hot damn, that bitch is $34ish just for one plug from bmw! __________________ 2011 N55 335xi - Jb4 - bms intake - ER charge pipe - cpe 5" downpipe - bms meth trunk kit - aa fmic - ER carbon fiber shroud - 60 scale/60 additive - 93 octane - 328awhp/395tq on mustang dyno

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