I Started Taking Subutex On 1-27-16 To Help Me Stop

I started taking Subutex on 1-27-16 to help me stop taking Norco after 15 years. I took 4 to 6, 10x325 tablets a day. I feel great, and have from the moment I stopped Norco. Two weeks after I started Subutex my Doctor added Buspar. Since the first tablet (5mg 4x's a day) I get a huge burst of energy each dose. Is that normal for Buspar, or is that because of the mix of Buspar with Subutex? Just wondering if the energy I am feeling will stop when I finish the Subutex. It really has helped me feel motivated and more like I'm living my life the way I'm supposed to again. Or maybe it's just from not taking Norco anymore?