haha its funny how people want more go out of these bikes they complain about not handling or stopping aswell but fuck it make it go faster quicker and neglect the stopping power! just a bit of humour!

One of the things that you can address, IF ya already haven't, is the factory delay in the fly by wire throttle setting. Some tuners can factor this out , for others, look at a throttle pack which plugs in line to change the speed the intake opens electronically against the throttle turn. It eliminates the hesitation and smartens up the response when ya give it a twist. Just google "throttle pack" by V and H.

 On the late model toures the cat is in the merge tube at the end of the headers and that's why the late model tourers don't sound tha same as other Harles with dual exhaust pipes. The system is basically a 2 into 1 exhaust with dual outlets. 2 into 1 exhaust always sound different on a Harley. I rode with a guy on the weekend who had a Vance and Hines 2 into 1 system and it didn't sound as good as Harley usually do.

I've seen available in the USA rebuilt factory headers with the cat removed.

I've seen posts on USA forums where owners cut a large window in the side of the collector tube and gut the cat element out and then weld up again.

This, unfortunately, only improves flow a little but doesn't solve the sounding different problem. If you want your tourer to sound like a regular Harley with dual exhaust pipes you need to get  header pipes with two separate pipes, preferably with a cross over tube, like the Cobra True Duals which have a hidden cross over tube.

You can try as many mufflers as you like, you will never get that typical Harley patata patata sound while you have the stock headers.

Check the RB Racing website for a lot of good info regarding exhaust set up.

http://www.rbracing-rsr.com/exhausttech.htm

also 

http://www.harley-performance.com/harley-exhaust.html

 

Easy job to cut the cat out. It fits where the two headers join the main body of the exhaust. Any one with a grinder and welder can do it in 3-4 hrs max. You will feel the difference

Save your money you can get close to aftermarket headers hp if you just do the cat and a tune. For the $400-$500 cost of new headers there is little gain.