rlow Posts: 4 September 2, 2012 at 3:29 pm #1307134 Can a mark4 be upgraded to a dsi with a dsi transducer
katmando Ramsey,MN pool 2, St.croix riverPosts: 691 September 2, 2012 at 11:39 pm #1096312 I would think you can. I have the mark4 dsi and I think it’s just named dsi because it came with the dsi ducer.