I've had a few different exhausts put on my trucks in the past. I have a Borla exhaust on my current truck. I'm not sure what it quantifies in HP or Torque. What I can tell you is that I'm happy with what I paid for on many levels. First- performance(responsiveness), second- looks(I get many comments at the local gas station), third- sound(very distinct and refined), fourth- million mile warrantee.

Hope this helps!