In 2011 on my 11 road glide ultra,cut header in half, drilled, sawed, and barrel sanded the cat out and welded in back together. This year I traded for an ultra limited, for 100.00 I just ordered a header from wildpigpipes.ocm, and bolted it on. Bought mufflers from them as well, 185.00 for seconds on e-bay. In 2011 also tried the V&H tuner, it pumped oil out the air breather all over the bike, later had HD put their tuner on, much better. This time I installed HD's stage one air breather and had HD put their tuner on the bike and runs and sounds great. Saved a ton on the exhaust, so it didn't hurt as bad to have HD put the tuner on. Getting rid of the cat is well worth it, sat in traffic last year in Salt Lake city at 105 deg. F, remember before the cat was out could hardly sit on bike in 80 deg. F weather.