Cls55 spark plugs

[Frank86]

Hi guys.
My cls55 is due a service and was just wondering what plugs people use when you have a modified m113k engine. I haven’t checked what plugs are already fitted, don’t know if people go colder or just stay with standard rated plugs.

Car is running 585hp/620tq
Smaller supercharger pulley and modified exhaust and a map.
Any recommendations greatly appreciated

 

[Alex]

Bog standard Bosch plugs on my unmolested M113K. Cheapest I could find. Not even made in Germany anymore but still fire up when asked.

 

[E55BOF]

Ask whoever did the mods, or MSL.

 

[popuptoaster]

Pull the plugs and have a look, should be able to get a good idea if they are the right ones from the state of them, not much point guessing when you have some that have been in the engine and can examine them.