This tuning makes the guitar sound crunchy and heavier. There are two ways to tune your guitar a full step down. First, you manually tune down each string by a whole step. So E becomes D, A becomes G, D becomes C, and so on. Another easier way is to place a capo on the second fret and tune your guitar to the standard E A D G B E. Once you remove the capo, you’ll automatically have the guitar tuned to Full step down.