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New Plugs @ 65k.....

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Old 09-25-2012, 11:12 AM
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2008 SL600
Originally Posted by alextaylor29
Checked with Dyno Comp in Scottsdale and they'll only charge me 2 hours of labor for the install (I'm a complete idiot when it comes to mechanical things), which sound about right if I were to attempt a DIY. Should cost me about ~$200 for the install.
I'll take mine there, too.
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Old 09-25-2012, 01:23 PM
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2006 E55 AMG
Changing the plugs clued me into 2 other surprises...

1. The Car has K&N filters already (i've only owned it for 2 months)
2. Car has SL55 Airbox conversion!
Now I wonder what else the previous owners were up to? crank pulley and tune would be nice!



Last edited by streetspeeder; 09-25-2012 at 01:26 PM.
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Old 09-25-2012, 02:16 PM
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2006 E55 AMG
Originally Posted by marc.l
My car has Mercedes R1 plugs are these just Mercedes own part number on ngk plugs ?
Bosch or NGK. Merc doesn't make plugs.
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Old 09-25-2012, 02:20 PM
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E63S
Originally Posted by streetspeeder
Changing the plugs clued me into 2 other surprises...

1. The Car has K&N filters already (i've only owned it for 2 months)
2. Car has SL55 Airbox conversion!
Now I wonder what else the previous owners were up to? crank pulley and tune would be nice!

#2....sl55 airbox conversion?
Whats different? Mine are out of an sl55 but looked and fit the same to me.

Installing plugs thursday...control arm and ball joint and oil went in yesterday
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Old 09-25-2012, 02:40 PM
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2006 E55 AMG
Originally Posted by bghark
Bosch or NGK. Merc doesn't make plugs.
Hope this explains...

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Old 09-25-2012, 03:01 PM
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2012 C63 BS & 2014 E63 Estate & 2008 CLK63 BS
SL55 airbox??? This is a common mod for the c32, but dont believe there is any difference to the E55 airbox
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Old 09-25-2012, 04:35 PM
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2006 E55 AMG
Originally Posted by AKnight55
SL55 airbox??? This is a common mod for the c32, but dont believe there is any difference to the E55 airbox
Dang it...pop goes my bubble!
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Old 09-25-2012, 04:43 PM
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2003 E55 estate
Yep they be the ones , I was surprised as they had no temperature number other than R1 . I take it they are the standard plugs fitted by a mb service centre ?
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Old 09-26-2012, 01:38 PM
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2006 E55 AMG
Originally Posted by streetspeeder
Hope this explains...

NGK I guess. I have seen plugs with the Merc star, the fact is Merc sources plugs and use either Bosch of NGK. My W126 -SEC came with Bosch plugs. Audi has NGKs' with the Audi rings btw.
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Old 09-26-2012, 02:30 PM
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2003 E55 estate
Quite aware that Mercedes do not make plugs .....
Was more wondering if the ones in the car are correct as they have no heat range on them .
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Old 09-26-2012, 02:48 PM
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2006 E55 AMG
Originally Posted by marc.l
Quite aware that Mercedes do not make plugs .....
Was more wondering if the ones in the car are correct as they have no heat range on them .
.
NGK-LFR6A are stock. NGK-LFR6AIX are the same temp and are a better plug for a stock motor imho. NGK-LFR7AIX are a step colder and are great for boosted motors. A step colder plug on a stock motor won't hurt anything but you will also not get the full benefit of the plug.












NGK-LFR6A are stock. NGK-LFR6AIX are the same temp and are a better plug for a stock motor imho. NGK-LFR7AIX are a step colder and are great for boosted motors. A step colder plug on a stock motor won't hurt anything but you will also not get the full benefit of the plug.












Miss understood, my bad Can't see if the part # is on the side of the plug. NGK-LFR6A are stock. NGK-LFR6AIX are the same temp and are a better plug for a stock motor imho. NGK-LFR7AIX are a step colder and are great for boosted motors. A step colder plug on a stock motor won't hurt anything but you will also not get the full benefit of the plug.
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