03-31-2017, 11:22 AM | #1 |
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Which Sparkplugs? N55 (mods)
Hopefully someone can chime in on this.... I've seen posts where everyone says something different...
I have a 12 335i Mods: Jb4 Catless DP BMS INTAKE resonator delete (if that makes any difference) I'm gonna change my plugs in the summer and wanted recommendations... I've heard of people say go 1-step colder or something and I have no idea what that means :O |
03-31-2017, 12:55 PM | #2 |
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I have the OEM Bosch plugs which were recommended by many people. Because of the tune and FBO, I went one step colder which meant gapping them to .022, you can do this by slightly pushing up with a gap measuring tool, or buying pre-gapped plugs. I had my shop do it to the plugs for me so I could stick with Bosch.
Per NGK's website: "Typically, for every 75-100 hp you add, you should go one step colder on the spark plug's heat range"
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03-31-2017, 12:57 PM | #3 | |
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Yungsta126.50 |
03-31-2017, 01:14 PM | #4 |
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It was the first link that came up on google
Combustion reaction physics are the same regardless of spark plug manufacturer, so I just used their quote to show why gapping is necessary on modified cars.
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03-31-2017, 04:37 PM | #5 |
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Fbo pwg e40 1 step colder ngk @.022 and it runs like a beast
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04-01-2017, 01:26 PM | #8 |
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The one step colder. I think it's called NGK 5992.
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2013 335i xdrive BSM Sportline: FBO (ER FMIC, catless DP, CP, TIC, AFE dry filter, JB4 Map 2 or 5), Dinan springs, Doss Wheels (19x8.5), DWSO6 255/35/19, M4 Style Rear Spoiler, M Grille, Painted Whiskers/Front Reflectors
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04-01-2017, 04:17 PM | #9 |
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04-01-2017, 04:55 PM | #10 |
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N20 sparkplugs gapped at .020
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13' 335i M Sport. EBII/Coral Red 6MT. RPI GT exhaust, Resonator delete, PS1, GFB DV , BM3 Stage 2, ER CP, VRSF DP, VRSF 5.5in Stepped FMIC, Dinan Shockware. Carbon M Performance rear diffuser. M4 trunk lip. Conti DWS06 225/40/19 and 255/35/19
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04-01-2017, 04:55 PM | #11 |
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04-01-2017, 08:01 PM | #12 |
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i currently have 35k on the clock 2015 435i, should i change my sparkplugs soon? and if so which, I'm fbo, catless dp, bms intake, jb4, fmic, muffler bypass, and occasionally run e85, should i go with the ngk5992 1 step .022 or the 2 step n20,s55 0.020 gapped
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04-02-2017, 02:25 AM | #13 |
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@Dejan_
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13' 335i M Sport. EBII/Coral Red 6MT. RPI GT exhaust, Resonator delete, PS1, GFB DV , BM3 Stage 2, ER CP, VRSF DP, VRSF 5.5in Stepped FMIC, Dinan Shockware. Carbon M Performance rear diffuser. M4 trunk lip. Conti DWS06 225/40/19 and 255/35/19
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04-02-2017, 06:42 PM | #14 |
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Had issues with misfiring with oem plugs, so I changed them to NGK 1-step colder (95770), gapped them to 0.022", tightened them to 17 ft/lbs, and blew into the coils to make sure there wasn't any debris. Car runs perfectly.
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04-02-2017, 10:39 PM | #15 | |
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If you have increased boost you should replace them more often. You should go 1 step colder. (Above 500whp you can adjust to 1,5 colder,imo). I change mine every 15K (max.) in order to eliminates upcoming issues and I'm certain this 1 hr is spend wisely. /Krelle
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GTBrandon260.00 |
04-02-2017, 11:52 PM | #16 |
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So I'd buy the colder plugs....
So let's say I buy one of the NGK ya all posted model wise... Do I have to manually gap them then?? I don't have a spark plug gapping tool so I'd have to get one |
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04-03-2017, 02:05 AM | #17 |
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awesome yalaa
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04-03-2017, 03:45 AM | #18 |
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PSA
the NGK 5992 are NOT one step colder than stock N55 plugs, same heat range. N54 is a different story, which is why it was such a popular choice. http://www.e90post.com/forums/showthread.php?t=1224377 I'd look into copper plugs, better performance but much shorter intervals.
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04-03-2017, 09:49 AM | #19 | |
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04-03-2017, 11:16 AM | #20 | ||
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04-03-2017, 11:21 AM | #21 | ||
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04-03-2017, 11:28 AM | #22 |
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