Chris,
Yazoo is correct about the ground conditions. The soil type I developed the program for is moderate in mineralization, so it should work fine for you as is unless you are dealing with extreme soil (high mineralization) conditions. All the settings I use on my V3 are also found on the V3i as well. Make note of the Range setting in the Audio section. Those have been reversed on the V3i from the original settings found on the V3. Good luck, and good hunting.
Jack