hello everyone i just bought a 2012 cls63 and i think i needs plugs and coils already lol. im getting a tune in a few months but i need plugs and coils now, so would it affect the engine in any way if i was to buy colder plugs now without a tune so i can be ready for when i do get one? and i was looking around and seen a few posts about ngk 1555, are these plugs okay for a eurocharged stage 2 tune? thanks in advance

 

yes you can use them without any issue, i used those same plugs for 1 year without any problems on stock tune.