To change or not to change - that is the question

BlueBimmer · 07-15-2012, 01:11 AM

so i'm at 44k, Cobb stage 1 aggressive tuned since 42, dealer refused spark plug change under warranty saying to come back at 49 and he;ll do it since the car is saying due in 8k.

I'm getting mid life oil change (8K) and walnut blasting done this Friday.
Custom hybrid intake to be installed soon after the oil change.
Should I change the plugs myself or wait another 5K for the dealer to do it?

idrift4wd · 07-15-2012, 01:36 AM

wait, unless your getting misfires.

335xiRT1 · 07-15-2012, 01:41 AM

If you never changed them.
Deff change plugs.

Wedge1967 · 07-15-2012, 10:44 AM

I agree with idrift4wd, unless you're getting misfires I wouldn't mess with them. Also a quick side note, the dealer will gap for stock. As you go from stage 1 to 2, you may need to reduce the gap to prevent high hp and high boost related misfires.

max_k20 · 07-15-2012, 10:52 AM

40k miles here tuned since 36k miles. Just ordered my plugs as getting rough idle (more on hot temp) and the rare misfire (not even coding). Anyway heard those plugs are Backorder (and confirmed from a seller on ebay) for 45-60 days. If you think you might need them soon just order now ! Got a great deal on ebay (as some seller have huge shipping fee to canada)

BlueBimmer · 07-15-2012, 11:31 AM

link to seller>??

BlueBimmer · 07-15-2012, 11:36 PM

common someone give me some input - s it worth it to change them now or since i don't have misfires (yet) I shouldn't worry about it and t they last another 5k I get them for free?

amclint · 07-16-2012, 12:18 AM

Quote:

Originally Posted by BlueBimmer

common someone give me some input - s it worth it to change them now or since i don't have misfires (yet) I shouldn't worry about it and t they last another 5k I get them for free?

Just leave them if you are stage 1 and nothing is wrong.

E90Company · 07-16-2012, 12:33 AM

If it were my car, I would change them because i'm OCD even if you weren't having any issues. That's alot of miles on the plugs for a tuned car.

JJFESQ · 07-16-2012, 02:42 AM

is $150 including OEM plugs a good price for install?

ihc95 · 07-16-2012, 05:59 AM

If you don't have misfires or rough idling, let the dealer change them when the time comes.

BlueBimmer · 07-16-2012, 09:40 AM

Quote:

Originally Posted by ihc95

If you don't have misfires or rough idling, let the dealer change them when the time comes.

I am leaning more towards this route since they'll be free and it'll give me an excuse to go to the dealer one last time under warranty.

Mike@N54Tuning.com · 07-16-2012, 10:00 AM

I would normally say change them but since you are due in 7-8K and not experiencing any symptoms I would just get them changed at the next service.

Normally we recommend 20-25K when tuned as a good change interval.

Mike

335twins · 07-16-2012, 11:08 AM

I'm in the same situation, my SA told me to come at 49,000 (im at 45,000- tuned for the last 5k) and they will replace the spark plugs, i say if you dont get misfires i would wait.

Jeff@TopGearSolutions · 07-16-2012, 11:25 AM

Quote:

Originally Posted by Mike@N54Tuning.com

I would normally say change them but since you are due in 7-8K and not experiencing any symptoms I would just get them changed at the next service.

Normally we recommend 20-25K when tuned as a good change interval.

Mike

07-15-2012, 01:11 AM	#1
BlueBimmer Enthusiast 47 Rep 278 Posts Drives: 2009 335i Convertible Join Date: Apr 2012 Location: PA iTrader: (5)	To change or not to change - that is the question - sparks plugs so i'm at 44k, Cobb stage 1 aggressive tuned since 42, dealer refused spark plug change under warranty saying to come back at 49 and he;ll do it since the car is saying due in 8k. I'm getting mid life oil change (8K) and walnut blasting done this Friday. Custom hybrid intake to be installed soon after the oil change. Should I change the plugs myself or wait another 5K for the dealer to do it?
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07-15-2012, 01:36 AM	#2
idrift4wd Brigadier General 149 Rep 3,549 Posts Drives: Three Hundred and Thirty Five Join Date: Jul 2010 Location: Yonkers NY iTrader: (0) Garage List 2007 BMW [7.00]	wait, unless your getting misfires.
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07-15-2012, 01:41 AM	#3
335xiRT1 Captain 47 Rep 693 Posts Drives: 2007 335i Join Date: Oct 2008 Location: long island iTrader: (14)	If you never changed them. Deff change plugs.
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07-15-2012, 10:44 AM	#4
Wedge1967 Banned 125 Rep 2,172 Posts Drives: '07 e92 AT Sport Montego Blue Join Date: Sep 2011 Location: Portland, OR iTrader: (3)	I agree with idrift4wd, unless you're getting misfires I wouldn't mess with them. Also a quick side note, the dealer will gap for stock. As you go from stage 1 to 2, you may need to reduce the gap to prevent high hp and high boost related misfires.
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07-15-2012, 10:52 AM	#5
max_k20 Bavarian Love 24 Rep 263 Posts Drives: 230i xDrive Join Date: Mar 2012 Location: Quebec, Canada iTrader: (2)	40k miles here tuned since 36k miles. Just ordered my plugs as getting rough idle (more on hot temp) and the rare misfire (not even coding). Anyway heard those plugs are Backorder (and confirmed from a seller on ebay) for 45-60 days. If you think you might need them soon just order now ! Got a great deal on ebay (as some seller have huge shipping fee to canada) __________________ 08 FG2 Civic SI FBO - SOLD 09 E92 335i Xdrive FBO - SOLD 17 F22 230i Xdrive \| Alpine White \| Coral Red \| M-Sport \| BMS Intake \| JB4 \| 666M Rep \| M Carbon Mirrors \| Roof Rack \| Daily Driven
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07-15-2012, 11:31 AM	#6
BlueBimmer Enthusiast 47 Rep 278 Posts Drives: 2009 335i Convertible Join Date: Apr 2012 Location: PA iTrader: (5)	link to seller>??
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07-15-2012, 11:36 PM	#7
BlueBimmer Enthusiast 47 Rep 278 Posts Drives: 2009 335i Convertible Join Date: Apr 2012 Location: PA iTrader: (5)	common someone give me some input - s it worth it to change them now or since i don't have misfires (yet) I shouldn't worry about it and t they last another 5k I get them for free?
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07-16-2012, 12:33 AM	#9
E90Company Major General 196 Rep 6,136 Posts Drives: Car Join Date: Mar 2012 Location: FL iTrader: (2)	If it were my car, I would change them because i'm OCD even if you weren't having any issues. That's alot of miles on the plugs for a tuned car.
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07-16-2012, 02:42 AM	#10
JJFESQ Big Poppa 9 Rep 140 Posts Drives: F15 3.5i AW/Mocha Join Date: May 2012 Location: Long Island iTrader: (1) Garage List 2014 535xi [0.00]	is $150 including OEM plugs a good price for install? __________________ F10 535xi AW/Mocha
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07-16-2012, 05:59 AM	#11
ihc95 Major 148 Rep 1,315 Posts Drives: 2021 X3 M40i, 2018 Mustang GT Join Date: Jul 2011 Location: NJ iTrader: (1) Garage List 2007 BMW 335i Coupe [0.00]	If you don't have misfires or rough idling, let the dealer change them when the time comes.
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07-16-2012, 10:00 AM	#13
Mike@N54Tuning.com Joint Chiefs of Staff 4980 Rep 116,119 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	I would normally say change them but since you are due in 7-8K and not experiencing any symptoms I would just get them changed at the next service. Normally we recommend 20-25K when tuned as a good change interval. Mike
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07-16-2012, 11:08 AM	#14
335twins Captain 145 Rep 737 Posts Drives: 2020 x3 M40i, 2019 M2Comp Join Date: Mar 2012 Location: AZ iTrader: (1)	I'm in the same situation, my SA told me to come at 49,000 (im at 45,000- tuned for the last 5k) and they will replace the spark plugs, i say if you dont get misfires i would wait.
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