tailgunner exhaust

[Horrendous]

Hey guys right now I'm running a kerker 4-1 and I'm really thinking about putting a tailgunner muffler on it. The only thing holding me back is performance. I really don't want to take a loss in HP over it. Anybody ever use these and know what it might do to my power output?
WWW.tailgunnerexhaust.com

 

[KJShover]

I think they're a pretty trick muff, There is a cat up here that has one underneith his tail section on his Honda. It looks pretty damn cool. but I also think they'll eat a little hp, but nothing too major. Its going to build a little more backpressure to turn the "guns" so you might be the same or a little bit better on the Tq side of things, but I don't see any gains in hp because of the restriction.