If you had read the specs in the link i showed you. It is rated down to .1Hi !
The XCube Ultra is nice , but will fire at minimum 0.10 Ω in VW .
Also , i did mention the quad coils builds that might be unsafe ,
but it's because i want nice vapor chucking builds ; many competition or vapor builds , often run with parallel coils , running between 0.07 Ω or 0.10 Ω , so that's very low .
Thanks .