Ok just an update I figured out why my 25 mm was a little noisier so let me explain so you don't have to go thru it as well,in my 22 I have a 28 dual twisted wire build on a 2.5 mm bit that ohms in at .42-.43 so it's a small coil and that's fine cause it's a small chamber,but that same build on the 25 mm doesn't work as good to much air going thru there,so I put the same build but used 26 gauge dual twisted wire instead of 28 gauge and it's much smoother,I hope all this will make sense and be of some help to you.by the way I don't use the coils they give all 3 of them how stupid is that they should give us 4 not 3,anyways I think there too small,especially for the 25 mm version.