Exhaust Questions

[BlackbeautyGMC]

So here's my dilemma. I got an 04 2500 with the 6.0. I wanted a nice sounding rumble that could get loud, and still run good. I went with a Borlo ProXS 2 in and 2 out muffler. It sounds okay, a little funny at lower RPMS. The only thing that got me, is I lost lower speed oomph. It just drags now on takeoff. When I am already at cruising speed and get on it, it runs like a rabid hyena. It makes me want to get rid of the Borla. Any advice on how to fix it, or a better muffler that will give me that good deep rumble back without the low speed lag?

[Formulabruce]

The Muffler and the heads are tuned to restrict the exhaust at lower RPM for TORQUE...

but people want sound of Torque...

This is your dilema.... Good luck