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BMW 3-Series (E90 E92) Forum
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NGK spark plugs?
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07-22-2007, 11:43 PM | #1 |
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NGK spark plugs?
What kind of plugs come stock on the 335?Has anyone tried running a set of ngk's people got better results using them on bossted M3s and wondered if they would alow a little more timing
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07-22-2007, 11:52 PM | #2 | |
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BMW says a special tool us used to removed the spark plug. The socket needs to be thin as well as there isn't enough space on the N54 cylinder head to accept a typical spark plug socket. I'll try to get more information tomorrow on the spark plug and see if NGK offers anything. |
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07-23-2007, 10:25 AM | #4 |
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Drives: 67 GT500,69 Boss 429, 335i
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07-23-2007, 11:53 AM | #7 |
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Colder plugs would only help if the stock plugs were causing detonation. I dont think thats a problem with the N54. M3's came with relatively hot plugs from the factory in a NA configuration, which is why guys using forced induction did a little better with a more suitable plug. BMW designed the 335 engine for high compression and boost, which would include much cooler plugs than they would use in a NA engine.
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07-23-2007, 06:29 PM | #8 | |
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07-23-2007, 07:07 PM | #9 |
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I went with a set of NGK BPR8ES plugs in my 528 turbo. Coming from the stock eta Bosch WR9LS it was good for another pound of boost. But thats a different animal next to the 335.
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