Im having an issue with my mids and highs cutting out when turned up to higher volumes. I dont know if its a problem with the install or a problem with the equipment it self. But I do know that it should be able to be louder than what it is without cutting out. I got Rockford t2s and a Rockford t400.4 any advice?

Connection problem. When you turn volume up, things get louder, geting louder has several effects. Saying this, I would advise to check all connections. The RCAs behind the head unit and at the amp. You may also need to check the wires through the who install, to make sure there are no cuts. Check the connections to the door speakers and subs. Essentially, this is a simple, but time consuming issue. 

Or perhaps your perception of "should be" isn't right. Can test that by turning down the gain and repeating what causes it now.

Well they aint too much louder than what the stock speakers were unpowered