6.2 Exhaust cut as a silencer?

[ktm505sx]

I dont like the one from hennessey. It just add sound not hp.
I would like to install a magna flow but, it is too noisy all the time. I know because i used to have a svt lightning with long tubes headers.

So what about a magnaflow exhaust system with a stock silencer aux switch.

How many hp will add ir drop a hennessey exhaust cut?

 

[Humvee21]

You shouldn't be so concerned with HP. Adding a catback exhaust for power is the wrong way to go. With a catbacj exhaust, your priority is the sound. I think you have mixed priorities.