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  #1  
Old 11-24-2003, 06:59 PM
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bmw540i bmw540i is offline
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Location: C.A. - T.X.
 
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Mein Auto: 01 - M62
Performance spark plugs

Hi guys its time to change my spark plugs and i was wondering what are the best performance spark plugs. I heard good things about the DENso iridium spark plugs are they any good does anyone have experience with them. Thanks for your replys.
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  #2  
Old 11-24-2003, 08:07 PM
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Greco Greco is offline
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Mein Auto: '98 540i/6
I had mine replaced to solve a misfire. Dealer used OEM NGK R's 4 pins. They work awesome. Correct me if I'm wrong but doesn't BMW used specific spark plugs that are normally not found at Pep Boyz?
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>> E39 540i/6 Biarritz Blue <<
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  #3  
Old 11-24-2003, 08:08 PM
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DSPTurtle DSPTurtle is offline
MaxDH
Location: Viera, FL
 
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Stock, Stock, Stock... OEM plugs from your local dealership. Designed to work with your car and not that expensive. All the other plugs seem to have given someone fits at one time or another. AFAIK, there is no horsepower in spark plugs...
JB
  #4  
Old 11-24-2003, 08:32 PM
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bmw540i bmw540i is offline
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Location: C.A. - T.X.
 
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Greco what was your milage when you first changed the spark plugs. I currently have 37000 miles and im thinking about changing everything, spark plugs, diff oil, transmission oil, etc. So you guys recommend using the oem spark plugs can you give me the name of the specific spark plugs that i should get. Thanks everyone for your replys.
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  #5  
Old 11-25-2003, 08:04 AM
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Greco Greco is offline
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Mein Auto: '98 540i/6
I changed mine at 50K miles, after a series of misfires. They are made by NGK, they have the NGK stamp on them. They are pretty large and have 4 pins.
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>> E39 540i/6 Biarritz Blue <<
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Royal Purple Synchromax Transmission Fluid, GruppeM Ram Filter Charger
  #6  
Old 11-25-2003, 08:51 PM
540Greg 540Greg is offline
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What do mean by "not that expensive"

Quote:
Originally Posted by DSPTurtle
Stock, Stock, Stock... OEM plugs from your local dealership. Designed to work with your car and not that expensive. All the other plugs seem to have given someone fits at one time or another. AFAIK, there is no horsepower in spark plugs...
JB
I was at a bay area dealership and almost bought plugs. Thay wanted $18.50 per plug. I didn't buy them.

Greg S.
  #7  
Old 11-26-2003, 08:15 PM
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DSPTurtle DSPTurtle is offline
MaxDH
Location: Viera, FL
 
Join Date: Oct 2003
Posts: 391
Mein Auto: 540i6
$18.50 per plug??? Wow, you should have asked to have your picture taken with one of those plugs!!! I think I got all 8 of mine for around $36.
JB
PS This should be post number 100 for me... woo hoo
  #8  
Old 12-05-2003, 09:23 PM
s500fun s500fun is offline
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Location: Cos Cob, CT
 
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Mein Auto: 1998 BMW 540i sport
enso iridium plaugs

regap them as recommended and you will be the happiest person in the world. the Denso Iridiums cleaned up all of the the engine strrains in spark. acceleration is smoother and there is no more loading on top of loading power thanks ~Suman good luck its the way to go with any extra air or fuel changes ~
  #9  
Old 12-05-2003, 09:29 PM
dave_in_VA dave_in_VA is offline
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Mein Auto: 00 528i 92 525iT 86 535i
You cant regap 4 electrode plugs.

Quote:
Originally Posted by s500fun
regap them as recommended and you will be the happiest person in the world. the Denso Iridiums cleaned up all of the the engine strrains in spark. acceleration is smoother and there is no more loading on top of loading power thanks ~Suman good luck its the way to go with any extra air or fuel changes ~
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  #10  
Old 04-13-2004, 05:25 PM
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bmw540i bmw540i is offline
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So do you guys recommend the Densos or not.
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  #11  
Old 04-13-2004, 05:52 PM
PropellerHead PropellerHead is offline
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Location: At the wheel of a bimmer
 
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Quote:
Originally Posted by bmw540i
So do you guys recommend the Densos or not.
Only if you get a badge with them.

Snake oil. I will use OEM.
  #12  
Old 04-13-2004, 09:46 PM
bk540sport bk540sport is offline
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Location: usa
 
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Posts: 45
Mein Auto: car
Quote:
Originally Posted by PropellerHead
Only if you get a badge with them.

Snake oil. I will use OEM.
Hello, i put the bosch platnuim 4 plugs in my 98 540i, i have no problems with them so far at all, it has been around 5000 miles since they were put it, the denso plugs are good for performance, but do not last long at all, a couple thousand miles at most
 

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