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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Upgrading spark plugs to help with SES light



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      01-14-2008, 02:11 PM   #1
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Upgrading spark plugs to help with SES light

I keep getting cylinder number 6 misfire codes thrown in my car especially with V2 with 100 octane. When i return the car back to stock no issues. I have already changed out that cylinders spark plug and coil but not the injector. However, I think with the increased load on the spark plug I keep having that cylinder misfire. Just wanted your oppinon do you guys think that upgrading the spark plugs to something like the Pulstar brand would help?
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      01-14-2008, 02:25 PM   #2
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When someone comments on this, could they explain why this may occur? Thanks...
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      01-14-2008, 02:26 PM   #3
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if the spark plugs have a single tip, maybe you should close the gap a little before changing them out. im not sure if our motors have single tip or 4 tip plugs though...
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      01-14-2008, 02:28 PM   #4
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ya id love to run some colder plugs in the n52
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      01-14-2008, 02:58 PM   #5
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Chitown-- You have an email

And yes, I think a spark plug change is in order. I had a consistent misfire in cyl #2 several weeks ago. Ended up changing all my plugs and the problem immediately went away. I had 25k miles on my original plug. I think a 20k miles service interval is reasonable for a tuned car. Especially one that sees bouts of race gas and 400+bhp. FWIW, we use multi-tip plugs and can't reduce the gap as we would in any other tuned application. I'm sure we'll have some more spark plug options (colder and smaller gapped) in the future. Right now, we don't have any other options (I've checked) so we just have to take care of the ones we have and replace them when the time comes.

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      01-14-2008, 03:01 PM   #6
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Ya I had a missfire also on cylinder #4. I did the same thing and changed all the plugs and the miss fire went away.

It was very noticable in my car since the esienmann exhaust and DP's make the popping even worse.

I made a thread about it somewhere.
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      01-14-2008, 03:07 PM   #7
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Quote:
Originally Posted by shiv@vishnu View Post
Chitown-- You have an email

And yes, I think a spark plug change is in order. I had a consistent misfire in cyl #2 several weeks ago. Ended up changing all my plugs and the problem immediately went away. I had 25k miles on my original plug. I think a 20k miles service interval is reasonable for a tuned car. Especially one that sees bouts of race gas and 400+bhp. FWIW, we use multi-tip plugs and can't reduce the gap as we would in any other tuned application. I'm sure we'll have some more spark plug options (colder and smaller gapped) in the future. Right now, we don't have any other options (I've checked) so we just have to take care of the ones we have and replace them when the time comes.

Shiv
Thanks for the prompt reply Shiv,

Do you think I should try these Pulstar ones? They say that they are supposed to be better.
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      01-14-2008, 03:08 PM   #8
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Quote:
Originally Posted by shiv@vishnu View Post
Chitown-- You have an email

And yes, I think a spark plug change is in order. I had a consistent misfire in cyl #2 several weeks ago. Ended up changing all my plugs and the problem immediately went away. I had 25k miles on my original plug. I think a 20k miles service interval is reasonable for a tuned car. Especially one that sees bouts of race gas and 400+bhp. FWIW, we use multi-tip plugs and can't reduce the gap as we would in any other tuned application. I'm sure we'll have some more spark plug options (colder and smaller gapped) in the future. Right now, we don't have any other options (I've checked) so we just have to take care of the ones we have and replace them when the time comes.

Shiv
Hey Shiv,

I dont see an email
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      01-14-2008, 03:09 PM   #9
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Quote:
Originally Posted by Chitown335i View Post
Thanks for the prompt reply Shiv,

Do you think I should try these Pulstar ones? They say that they are supposed to be better.
I'd be hesitant to try anything other than stock. At least until we get to test the Pulstar plugs. Do you have link for them?

Shiv
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      01-14-2008, 03:10 PM   #10
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Quote:
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Hey Shiv,

I dont see an email
No problem. I said basically the same thing in my post
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      01-14-2008, 03:43 PM   #11
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Heres the link: http://www.pulstarplug.com/ I already ordered them before I was able to see your post. Ill let you know how well they are. My friend has them in his car and he loves them. Well see what happens.
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      01-14-2008, 03:51 PM   #12
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chitown, are these the ones your ordered?

https://www.pulstarplug.com/howtobuy...engine=1433813
 
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      01-14-2008, 04:03 PM   #13
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Lol funny thing is that those are cheaper than OEM plugs that were quoeted to me by Crevier bmw.

I got mine at irvine for like $17 each.

Crevier wanted $32 each.
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      01-14-2008, 04:08 PM   #14
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Quote:
Originally Posted by Walked U View Post
Lol funny thing is that those are cheaper than OEM plugs that were quoeted to me by Crevier bmw.

I got mine at irvine for like $17 each.

Crevier wanted $32 each.
Did you check price at Sterling?
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      01-14-2008, 04:09 PM   #15
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Did you check price at Sterling?
Ya, they didnt have any in stock. Lol


I bought out all irvine's they only had 5 in stock. So I got those.

Crevier is the only one that has them left.

But this was from 1/2 a week ago. So I dont know if the other dealerships got more.
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      01-14-2008, 04:12 PM   #16
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Quote:
Originally Posted by that guy nico View Post
chitown, are these the ones your ordered?

https://www.pulstarplug.com/howtobuy...engine=1433813
Yep those are the ones.
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      01-14-2008, 04:13 PM   #17
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Yep those are the ones.
let us know how they are
 
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      01-14-2008, 08:00 PM   #18
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Ill let you know how it goes, Im putting them in tomorrow, I got my fingers crossed. A friend of mine has them in his Evo VIII and he swears by them so. If they are as good as my friend is saying and as advertised then this might be a very good thing.
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      01-30-2008, 04:48 PM   #19
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Quote:
Originally Posted by Chitown335i View Post
Ill let you know how it goes, Im putting them in tomorrow, I got my fingers crossed. A friend of mine has them in his Evo VIII and he swears by them so. If they are as good as my friend is saying and as advertised then this might be a very good thing.

So???? How are they? Also read about these and would be interested to see how they do in the N54
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      01-30-2008, 05:37 PM   #20
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      01-30-2008, 06:55 PM   #21
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well im sorry to report that the plugs dont fit our cars turns out that bosch exclusively made these plugs for 'bmw our car takes a 12mm plug vs. 14mm. i have been trying to find some one who can produce cooler running plugs and perhaps close the gap a little as well.
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      01-30-2008, 07:01 PM   #22
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Seeing on the Pulstar site that they actually "have" these for our engine, I thought they might have already taken that into account. Also, our plugs have 3 electrodes as well, a completely different design than normal.

good picture of them over here
http://www.n54tech.com/forums/showth...ht=spark+plugs
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