01-15-2020, 08:02 PM | #1 |
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Are these the right plugs for a stock M5? The website says they are but they are so much cheaper than I thought they'd be. $62 for a set vs > $200 for an OEM set.
https://www.fcpeuro.com/products/bmw...sch-0242145541
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01-15-2020, 09:25 PM | #2 |
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Possibly. Oem parts with bmw logo are expensive. The ones you mentioned are basically the same thing but without bmw logo. Just make sure you buy the set with correct part number.
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01-21-2020, 05:44 PM | #3 |
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FYI - OEM is actually one step colder plug (S63) vs. Bosch - for non-M's (N63), hence the price difference + logo
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01-22-2020, 01:46 AM | #4 |
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01-22-2020, 05:22 AM | #5 | |
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01-22-2020, 05:41 AM | #6 |
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Thanks!
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01-22-2020, 08:12 AM | #8 |
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Has anyone gone with 1 step colder plugs on a stock engine? Does it help or hurt?
Scenario could be; was stage 2 tuned with 1 step colder plugs, downpipes etc. Then went back to a stock set up. Can you keep the same 1 step colder plugs? |
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01-22-2020, 09:40 AM | #9 |
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01-22-2020, 09:01 PM | #10 | |
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01-23-2020, 06:30 AM | #11 |
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Besides the OP of that thread, not sure. I have a set going in this weekend which is why I posted the link. If you look at the applications, the 8165 is used in a ton of other BMW engines. My guess is after some long term testing they realized the larger electrode wasn't needed on the M engines after all. Pair that with increased coil failures and it seems they've decided to phase out that plug.
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01-23-2020, 09:40 AM | #12 | |
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01-23-2020, 12:22 PM | #14 | ||
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01-23-2020, 12:53 PM | #15 |
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01-27-2020, 08:28 AM | #16 |
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is that the recommended interval, 50K? I thought people were replacing them more at 30K.
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01-27-2020, 09:09 AM | #17 | |
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I'm easy on my M with normally low rpm very light throttle town work and just the odd burst of speed when I'm out on my chosen cop free roads so in my case I don't need them like say someone who lives in an area where it's easy to put the foot down regularly. Using an fuel additive like say redex with every fill combined with decent fuel like Shell or Costco99 (Mobil) helps keep them cleaner longer and keeps the injectors primed well. |
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01-27-2020, 10:19 PM | #18 |
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Mines a 16. Went in for an oil change. SA said time based service recommended spark plugs. Its covered free. Battery also was low and was changed also. Not bad for a days work.
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01-29-2020, 05:08 AM | #19 |
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Finished replacing injectors, plugs (8165), coils, MAF's and air filters last weekend. So far so good. She runs better than ever. I'm sure the plugs have the smallest effect, but just thought I'd share. I'll report back if I have any issues I can pinpoint to the different plug. I gapped them at .022, anticipating putting a mild stage 1 tune on it this spring when the weather breaks.
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01-29-2020, 07:25 AM | #20 | |
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guess I'll plan to wait another year for plugs (barring rough idles, etc.), as I'm only at 37K atm and expect I'll only put another 7-8K on it this year. |
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01-30-2020, 02:57 PM | #21 |
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I have read that going a step colder on a stock engine could potentially be harmful and could be harder to start in cold weather conditions
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03-02-2020, 10:03 AM | #22 | |
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This must be what happened on my vehicle. The dealer changed the plugs at around 8,000 miles on the odometer and I'm guessing not because it was wholly necessary, but in large part due to the fact BMW would pay for it. Since I got the vehicle 800 miles later, I practically had new plugs and it runs like a Swiss watch.
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