Any down side to 1 step colder plugs?
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From: DownEast Maine
CLS 55 AMG E500 ML320
Any down side to 1 step colder plugs?
I've got to do plugs this weekend and I was thinking about going 1 step colder in view of future mods. If I don't have time for the mods this year, should I just go with stock. I found ILFR6A NGK (stock) on amazon for $10 each. Thoughts?
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2005 E55
Colder plugs pass heat better. The tips stay colder and reduce the chance of pre ignition in highly modified cars. But because they stay colder in normal operating conditions the tips foul faster, and they need to be thoroughly put through their paces often to be heated enough to keep the tips clean. Low lifespan.
IMO I would only go colder if you were very highly moded and could tell based on tracking timing that you were getting some knock retard. I think a lot of folks go to colder plugs a little too soon around here.
One of the tuners I chatted with said he started seeing some timing loss from detonation upwards of 600whp on stock plugs before going colder.
IMO I would only go colder if you were very highly moded and could tell based on tracking timing that you were getting some knock retard. I think a lot of folks go to colder plugs a little too soon around here.
One of the tuners I chatted with said he started seeing some timing loss from detonation upwards of 600whp on stock plugs before going colder.
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Joined: Oct 2018
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From: San Antonio, TX
2005 E55 AMG
I haven’t done plugs yet but I’ve removed the wires to do gaskets a couple times. People mention a boot tool for them but I’ve had no problems just using an open- ended wrench, I believe 11/16 to leverage against the head and pop them off no problem.
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From: Texas
2003 CL55
With added boost, colder plugs are good insurance and some notice a slight rougher idle. drivers rear plug is a little tough to get to and you may need a few extensions or swivel heads.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Thread Starter
MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
Likes: 109
From: DownEast Maine
CLS 55 AMG E500 ML320
Thread Starter
MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
Likes: 109
From: DownEast Maine
CLS 55 AMG E500 ML320
AAAHH the wrench trick. Forgot about that one. I think I did that with my wife's E.
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MBWorld Fanatic!
Joined: Jul 2014
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2005 e55 AMG
Just a little FYI. A colder plug will help prevent detonation by pulling heat out. Yes. And it's great for the street where temps constantly change. But........you want to keep as much heat in the chamber as possible with out detonation issues. Thermal barrier on piston tops is a perfect example of this. Thermal energy ... controlled energy, is how you make power.
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Thread Starter
MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
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From: DownEast Maine
CLS 55 AMG E500 ML320
Wow, even looks cool. Some kind of ceramic coating?
Plugs are here. I forgot to ask about the gap?? I've got to work all weekend anyway to finish a job.
Plugs are here. I forgot to ask about the gap?? I've got to work all weekend anyway to finish a job.
Super Member
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From: Christchurch, New Zealand
CLS55
You shouldn't be gapping anything mate. Pretty sure its 0.032" but the plugs you got shouldn't require adjustment. I brought the NGK one step colders and just slapped them straight in. Hasn't ****ed out in 30,000 miles of absolute hell (must be at least 6 sets of rear tyres) must be good!
Super Member
Joined: Jun 2017
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2005 E55
You shouldn't be gapping anything mate. Pretty sure its 0.032" but the plugs you got shouldn't require adjustment. I brought the NGK one step colders and just slapped them straight in. Hasn't ****ed out in 30,000 miles of absolute hell (must be at least 6 sets of rear tyres) must be good!
Driving like a grandma will wreck colder plugs.
Thread Starter
MBWorld Fanatic!
Joined: Aug 2012
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From: DownEast Maine
CLS 55 AMG E500 ML320
Put the plugs in today. HUGE difference! I guess I let that bit of maintenance go too long. No more misfire, More responsive, more power. The gap of the new plugs was .031, I left it that way. I set off the check engine light stomping on it last Tuesday, I hope it goes out with a couple key cycles.
