I did the swap yesterday. It took more than 4 hours and was a bit fiddly. not technically challenging, just time consuming. There were a few bolts that were very difficult to reach and undo. not impossible just "fiddly".
the cat is a stainless steel box with two inlets and two outlets. the inlets dump into an open chamber. The inlet pipes are partially restricted by a perforated tube so the gases are forced through a series of holes like a muffler baffle. the gases pass through a honeycomb structure about 5 inches long and exit into another open chamber with two outlet pipes. right angle turns are needed to enter and exit the cat. the outlets lead to the twin silencers.
the X pipe also has two inlets but they lead individually to curved pipes. the two curved pipes are joined, welded together and the adjoining wall s are removed to make a cross over .the replacement pipe is much lighter and the exhaust path appears to be much smoother with no right angle turns like in the cat.
the installation went well, everything lined up and no leaks.
all gaskets were reused.
there is a very slight increase in sound volume and the tone remains deep. it is not raspy like many aftermarket silencers and the overall tone remains that of a gentleman's motorcycle.
performance? don't know yet as it is still raining.
the manufacturer claims +8hp
