C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

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Old Oct 9, 2007 | 11:23 PM
  #1  
spyderpig's Avatar
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From: NorCal
'02 CL203 M111
spark plugs

Hi everyone,
I've been doing so much reading on this forum (getting tired of it =>my eyes not my motivation) and now after trying my new plugs, I think I have missed some posts or so.
I just tried the Denso IK20 because it was colder than the IK16, moreover it was the one recommanded by Denso(closest heat range to the factory plugs).
I noticed a little loss of power and also the engine noise has a little higher timbre... So I just wonder if it was in my head or I shouldn't have gone with the IK20.
It is not a major problem but if you guys have lil time to share your opinions i'll apreciate.
Thx.
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Old Oct 10, 2007 | 05:09 PM
  #2  
mleskovar's Avatar
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'17 Jaguar XF
Why do you think you need a colder plug? "Closest" Messing with plug heat ranges is playing Russian Roulet with your engine. Patinum/Iridium plugs cover a wider heat range than older/copper plugs so unless you've retuned your engine it shouldn't be necessary to change from stock.
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Old Oct 10, 2007 | 07:11 PM
  #3  
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From: West Los Angeles
Midnight Blue 2004.5 C230 Kompressor Sport Sedan. 2002 w210 E320, 2009 w211 E350 Sport
Originally Posted by spyderpig
Hi everyone,
I've been doing so much reading on this forum (getting tired of it =>my eyes not my motivation) and now after trying my new plugs, I think I have missed some posts or so.
I just tried the Denso IK20 because it was colder than the IK16, moreover it was the one recommanded by Denso(closest heat range to the factory plugs).
I noticed a little loss of power and also the engine noise has a little higher timbre... So I just wonder if it was in my head or I shouldn't have gone with the IK20.
It is not a major problem but if you guys have lil time to share your opinions i'll apreciate.
Thx.
I'm running ik20's in my car. No problems for around 10K miles.
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Old Oct 11, 2007 | 05:11 AM
  #4  
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From: Manchester, England.
CL203, W211
NGK ftw.
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Old Oct 11, 2007 | 09:03 AM
  #5  
BlackLiquorish8's Avatar
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From: Long Island, NY
C3Twon AWD Jumpofffff
Originally Posted by magnus203
NGK ftw.



i just use OEM ish
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Old Oct 12, 2007 | 12:34 AM
  #6  
spyderpig's Avatar
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From: NorCal
'02 CL203 M111
thx for your inputs I think the loss is barely noticeable, 1hp at best.
On the other hand, improvement in gas mileage... better than expected.
Next step ---> ASP (V3?). the version is not specified on aspracing.com...
cheers
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