Stage 3 Which Spark Plugs
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Junior Member
Joined: Jan 2022
Posts: 46
Likes: 7
2019 C63S
Stage 3 Which Spark Plugs
Currently running a stage 3 setup on my 2019 C63s and have been for a while, stage 3 consists of PTG turbos with methanol injection
Wanting to do a spark plug replacement as i can hear a slight missfire on idle
Ive been told the NGK stock replacements are fine, i have also been told the HKS one step colder is also fine but they do tend to cause missfire issues
What plugs do people with a similair setup run?
Wanting to do a spark plug replacement as i can hear a slight missfire on idle
Ive been told the NGK stock replacements are fine, i have also been told the HKS one step colder is also fine but they do tend to cause missfire issues
What plugs do people with a similair setup run?
Member
Joined: Oct 2012
Posts: 157
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From: Warrington UK
W211 E55 AMG & W163 ML270
I run the HKS on my stage 3 and every now and again had a miss fire on idle, ran some octain booster into the 99 and no idea why but zero miss at idle, so smooth hard to tell if it's on lol
MBWorld Fanatic!
Joined: Sep 2016
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From: Australia
⏱️ 700HP Facelift converted C63 S Coupe with Drexler 3.06 plated LSD
HKS
Currently running a stage 3 setup on my 2019 C63s and have been for a while, stage 3 consists of PTG turbos with methanol injection
Wanting to do a spark plug replacement as i can hear a slight missfire on idle
Ive been told the NGK stock replacements are fine, i have also been told the HKS one step colder is also fine but they do tend to cause missfire issues
What plugs do people with a similair setup run?
Wanting to do a spark plug replacement as i can hear a slight missfire on idle
Ive been told the NGK stock replacements are fine, i have also been told the HKS one step colder is also fine but they do tend to cause missfire issues
What plugs do people with a similair setup run?
Last edited by Jimmy_c63s; Nov 25, 2024 at 04:01 AM. Reason: Added pic
Thread Starter
Junior Member
Joined: Jan 2022
Posts: 46
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2019 C63S
Which part number plug are you using? M45HL OR M45XL?
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From: Charlotte, NC
17 C63S Coupe PTG1000
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From: Keep it simple - keep it OEM
AMG C63s Coupe
