BBK X-pipe and Magnaflow catback.

I installed a BBK offroad X-pipe and I also have the Magnaflow cat back. I'm not sure if I have a leak, or it's inherant with the BBk off road x-pipe. I tried listening for a leak by plugging each tailpipe and listening. no leak. Probably have to plug both tailpipes at once. At idle or light throttle it sounds awsome. Wide open throttle its
But at moderate throttle it sounds horable. I know the BBK x-pipe has a poor rep with chambered mufflers, but thought it was ok with Magnaflows and other straight through mufflers.

I'll just make sure I have no leak at the right Manifold flange. Sounds like it might be coming from there. Damn, I should have known better than to buy the BBK X. I really wanted an X for power and the differant tone, but finding one where I live for an auto, is tough, and the price was right. I'll give it some time. Some guys say the sound changes after a while. Plus I want to see if my quarter mile perfromance improves with it. If not I'll throw on my stock H again.
I need more patience.