does diameter size (60mm/70mm) have any correlation with older/newer version (v1/v2/v3) and sound (quieter/louder)?

in other word...are there both 60mm and 70mm model for all version? or 60mm = old 70mm = new? and is there a sound difference between 60 and 70mm?

thanks

 

60mm is V2=older
70mm is V3=newer

V2 in my opinion is not as loud as the V3.

I've had the V2 for a while now and I run a test pipe and that takes care of alot of the drone.

 

V3 is loud and drones like a Mofo, I sold mine after a few months.

 

all are just too loud!!! I got rid of mine also within a few months.