Yeah, d-bol is active within minutes of hitting your stomach and you notice a strength boost in a couple of days. Start to see changes in about a week.
There's a big surge of water weight which is lost after the cycle which leads people to believe that dbol gains don't last. But the muscle gained is the muscle gained, like any other steroid and in that regard dbol is pretty damn effective.
When my buddy took it for his first cycle, his lifts went up in weight within 3-5 days and by the end of the 1st week his forearms were HUGE and by a week and a half to two weeks his chest was huge, it happened so fast he got stretch marks.. He was taking 50mg everyday.