After a while, dilating stretches things out for a while so you just occasional dilation may be enough to keep things ready. In addition, after your healed up, sex can count as dilation when you partner is about the same size as your dilator. As for myself, I still have the 6 inches and inch and a half diameter that I had after surgery. PI surgeries can be fairly rugged and have a long history with many happy customers. The odds are your surgeon can determine the likely outcome so ask your doctor before making your decision.