Hey guys. I have a terrova ipilot (not link) on my crestliner and have recently ordered a Helix 10 G2N GPS and a Helix 10 G2N SI. I have been looking at these external GPS modules and just had a couple questions.

- Will adding one to the network improve the spot lock on my ipilot
- Will it make any noticable difference with my Graphs

I've heard these are mainly for the iPilot Link systems to help the unit keep its heading correct. But thought I would ask for a little more info.