What plug to use with water/meth injection?

[TX99M3]

I have a 2013 335is full bolt-on, running one-step colder plugs. I am in the process of adding water/meth injection. I see where 2-step colder plugs are recommended. However, most of the time I will not be spraying meth, maybe a couple of times a week (my wife drives the car much of the time on JB4 map 0 or 1. Are the 2-step colder plugs really needed? Will they be OK if not using WMI that often? I appreciate any feedback. I'm new to this car and WMI.

[BadBoostedBmwM3]

The best bet you’ll have is to jump over to Bimmerpost forum.