True it is used to kick start cycles. However, methandienone is an anabolic/androgenic steroid with certain unique properties which cause it to act synergistically with other compounds. For example, dianabol interferes with dopamine release, and causes an increase in adipose tissue reduction. Sure, it gets a bad rap for causing water retention, but the fact is, it causes some lean mass gains beneath the water. It would create even more lean mass if it was working synergistically with testosterone. If price/availability are not of much concern to you, then add it to the end of your cycle. Of course, it would be more useful in the beginning of a cycle, because waiting is boring. However, if you have dbol to spare, why not make your cycle more synergistic? It certainly is going to do anything bad.

-SF