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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > Which Sparkplugs? N55 (mods)
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      01-07-2019, 09:07 PM   #133
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I just bought a set of those NGK plugs was going to put them in tonight but don't have a deepwell 12 point socket to do it.
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      01-14-2019, 08:44 PM   #134
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Found a great video on doing this job. Not obvious for the first timer like me since I haven't done this on this car yet, but once you've seen it, you wonder how you didn't figure it out sooner. My issue was #5 is pulling timing about 10 degrees compared to the other 5 under hard acceleration, with or without a tune, its just more obvious with the tune. I'm replacing plugs since it has 83K miles and who knows if these are original., and swapping coil packs with #1 to see if it clears up or moves to #1, once the snow melts since #1 is super easy to get to if it is the coil pack..

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Last edited by boneheaddoctor; 01-14-2019 at 08:50 PM..
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      01-17-2019, 11:30 AM   #135
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Quote:
Originally Posted by boneheaddoctor View Post
I just bought a set of those NGK plugs was going to put them in tonight but don't have a deepwell 12 point socket to do it.
Make sure you get a thinwall 12 point socket. It's required for the job.
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      01-18-2019, 11:22 PM   #136
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Make sure you get a thinwall 12 point socket. It's required for the job.
Still waiting for the snow to melt to get to it....but thats what I guessed. Should be near an Autozone tomorrow to get the socket tomorrow.
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      01-19-2019, 10:37 PM   #137
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Got my thin-wall socket from Autozone, just waiting for the snow to melt and have some time to do this.
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      02-08-2019, 03:19 PM   #138
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Do you need colder plugs for a Bootmod3 Stage 1 car? My car has close to 42k miles, all stock now, goin BM3 Stage 1/Charge Pipes soon
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      09-27-2019, 11:58 AM   #139
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Do you need colder plugs for a Bootmod3 Stage 1 car? My car has close to 42k miles, all stock now, goin BM3 Stage 1/Charge Pipes soon
No
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      09-27-2019, 05:31 PM   #140
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If I were to switch off between stock and BM3 stage 1 and 2, should I stick to OEM or one step colder?
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      09-27-2019, 06:01 PM   #141
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If I were to switch off between stock and BM3 stage 1 and 2, should I stick to OEM or one step colder?
do the ngk colder plug.. its fine with the stock tune.
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      10-21-2019, 07:45 AM   #142
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Quote:
Originally Posted by pw0n View Post
If I were to switch off between stock and BM3 stage 1 and 2, should I stick to OEM or one step colder?
do the ngk colder plug.. its fine with the stock tune.
I don't think that would be my recommendation actually, and I just installed NGK 97506 (1 step colder) and I'm MHD Stg 1...seems our N55's are pretty particular about their plugs.

I first tried the 97506 on their stock gap (~.03) and got some misfires and went into limp mode. I re-gapped to ~.023 and now seems to be running smooth, but my logs still aren't as clean as before the new plugs. If I were to do it all over again I'd just go with stock bosch plugs, they're plenty fine up to anything on stock turbo.
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      10-22-2019, 03:27 PM   #143
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Quote:
Originally Posted by Alpine_F30 View Post
I don't think that would be my recommendation actually, and I just installed NGK 97506 (1 step colder) and I'm MHD Stg 1...seems our N55's are pretty particular about their plugs.

I first tried the 97506 on their stock gap (~.03) and got some misfires and went into limp mode. I re-gapped to ~.023 and now seems to be running smooth, but my logs still aren't as clean as before the new plugs. If I were to do it all over again I'd just go with stock bosch plugs, they're plenty fine up to anything on stock turbo.
I have the plugs in question and have zero issues. This isnt a complicated thing, its a spark plug.
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