How often should you change your spark plugs with a tune?

Alan l. · 08-10-2009, 10:01 AM

Seems like i've come across a decent amount of posts there talking about plugs fouling or new plugs bringing back lost performance etc....

When is a good time to swap out plugs on the N54? OEM or are there better longer lasting ones out there?

Alan

Terrance28 · 08-10-2009, 10:19 AM

I changed mines around 28k its been tuned since 19k and the plugs still looked fine to me.

techforge · 08-10-2009, 10:28 AM

I started getting misfires around 6000 miles and changed the plugs - which looked fine. The misfires continued until I took a long road trip of about 1200 miles and went through a few different tanks of gas. No misfires since then so it was probably bad gas. I think the plugs should last at least 20,000 but that's mostly conjecture on my part.

GBX · 08-10-2009, 10:49 AM

a little over 20,000mi and still on original plugs....no issues.

lawdude · 08-10-2009, 11:28 AM

http://www.e90post.com/forums/showpo...55&postcount=6

oddjob2021 · 08-10-2009, 12:27 PM

i would change every 15k to be safe

Mr. 5 · 08-10-2009, 12:44 PM

I did mine at 35k miles and they looked alright.
Most miles were freeway driven though.

old account 1 · 08-10-2009, 01:41 PM

Quote:

Originally Posted by Mr. 5

I did mine at 35k miles and they looked alright.
Most miles were freeway driven though.

We also did ours at 35k and they were a bit worn. Lots of hard test miles, though.

jpsimon · 08-10-2009, 01:42 PM

I'm at around 31k with no issues yet, i'll check them at 35k

08-10-2009, 10:01 AM	#1
Alan l. Major General 5461 Rep 8,818 Posts Drives: 2020 F95 X5M Competition Join Date: Jun 2009 Location: United States iTrader: (9)	How often should you change your spark plugs with a tune? Seems like i've come across a decent amount of posts there talking about plugs fouling or new plugs bringing back lost performance etc.... When is a good time to swap out plugs on the N54? OEM or are there better longer lasting ones out there? Alan
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08-10-2009, 10:19 AM	#2
Terrance28 Brigadier General 109 Rep 3,334 Posts Drives: Crimson Red E92 Join Date: Nov 2007 Location: Killeen, TX iTrader: (17)	I changed mines around 28k its been tuned since 19k and the plugs still looked fine to me. __________________ Mods list got too long, lets just say more than enough.
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08-10-2009, 10:28 AM	#3
techforge Lieutenant 26 Rep 577 Posts Drives: 335xi coupe Join Date: Jul 2008 Location: Denver iTrader: (2)	I started getting misfires around 6000 miles and changed the plugs - which looked fine. The misfires continued until I took a long road trip of about 1200 miles and went through a few different tanks of gas. No misfires since then so it was probably bad gas. I think the plugs should last at least 20,000 but that's mostly conjecture on my part.
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08-10-2009, 10:49 AM	#4
GBX Lieutenant 43 Rep 472 Posts Drives: 997.1 GT3 Join Date: Aug 2007 Location: LI, NY iTrader: (0)	a little over 20,000mi and still on original plugs....no issues.
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08-10-2009, 11:28 AM	#5
lawdude Colonel 93 Rep 2,339 Posts Drives: 335i ZPP ZSP TiAg MT Join Date: Jul 2006 Location: Georgia iTrader: (1)	http://www.e90post.com/forums/showpo...55&postcount=6 __________________ What do I know? I'm insane.
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08-10-2009, 12:27 PM	#6
oddjob2021 ASR Turbos+LSD+Meth= :D 73 Rep 1,517 Posts Drives: E92 335i Join Date: May 2007 Location: Miami, FL iTrader: (0) Garage List 2007 E92 335i [0.00]	i would change every 15k to be safe __________________ 2007 335i Coupe Mods: Check the Garage
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08-10-2009, 12:44 PM	#7
Mr. 5 Modder Raider 755 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	I did mine at 35k miles and they looked alright. Most miles were freeway driven though. __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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08-10-2009, 01:42 PM	#9
jpsimon Team Zissou 3065 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I'm at around 31k with no issues yet, i'll check them at 35k
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