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[TinSpinner]

Still pondering and researching my exhaust options for my stock '07 CUSE2. This thing is the hottest running bike I have ever had so I am on a mission to cool it down as much as possible. Read a lot of threads on here about removing the catalyst in the stock head pipes but I am not sure if there is one on 2007 models or even if that is the best way to go on my bike. Thinking more about true duals and a front pulley change to compensate for the low RPM torque loss. Any input would be appreciated.

[Hugh Janis]

No cat in your head pipe. Least expensive fix is to send your pipes to Fullsac for a recore and install the EMS from RevPerf when they return. One benefit is the EPA stamp on your pipes.

[ultrafxr]

Last summer I decided to reinstall the stock exhaust system since the Mrs. was complaining about the D&D Fatcats being a little too loud.  Had Fullsac de-cat and install their 1.75" baffle.  Started with the sert map from the tune when the D&Ds were installed and since I've had TTS upgrade my sert I ran several V-Tune sessions and dialed it in.  Bike ran and sounded great but Mrs. was most unhappy with the heat from the pipes.  With the crossover now in she got it from both the left and right sides and said it was worse (even thought the cats were removed) than the heat from the D&Ds.  So when we returned from a 5,500 mile trip to Nova Scotia back on went the D&D Fatcats and she is much happier and prefers the sound to the heat.

This is in no way an knock on Fullsac.  They did a great job and the baffles were fine and bike ran great with them installed.  But de-catting it just did not cool it down the way I thought it would.

[lv2ride56]

Nope, no catalyst in the head pipe. They are in the muffler if your running the SE touring mufflers. They can be removed by grinding the welds and removing the baffles where you will find the cats in the inlet end. Removal of the baffle is the same as you would do to replace same with the Fullsac. Removal of the catalyst will improve the flow some and the sound improves but heat doesn't change much. Best cooling additions to mine were Rush Ceramic coated true duals, using SE touring mufflers (cats removed), AND a T-Max auto tune EFI. No dyno but don't feel any loss at low end and definately improved the upper range.

[AZ Sparky]

Been researching the different options for my ride.
Suggest you consider Fullsac recore kit  http://www.fullsac.com/recorekit.html
and the xied  http://sales.nightrider.com/XiEDtm_p_8.html

Keep in mind I have not made these mods myself - I'm still looking around and considering all available
But I have seen/head of a couple members on this site go this route so it might be worth consideration.
Just wanting to share some of the research I've done so far.
If I'm off base, someone please correct me.
Good luck and let us know what you decide to do and what the results are.

[lv2ride56]

Fullsac is a quality baffle exchange. I didn't mention that I tried some 1.75 core fullsacs before I removed the cats from the stock baffles. They ran fine but were to loud for me. The stock baffles, without cats, have a nice bark when you are on it and a nice rumble at cruise without being to loud.

[TinSpinner]

Been researching the different options for my ride.
Suggest you consider Fullsac recore kit  http://www.fullsac.com/recorekit.html
and the xied  http://sales.nightrider.com/XiEDtm_p_8.html

Been thinking about recoring rather than replacing mufflers. First I've heard of the "xied" system, interesting though. Thanks for the input.

[TinSpinner]

Fullsac is a quality baffle exchange. I didn't mention that I tried some 1.75 core fullsacs before I removed the cats from the stock baffles. They ran fine but were to loud for me. The stock baffles, without cats, have a nice bark when you are on it and a nice rumble at cruise without being to loud.

Were the Fulsac 1.75's substantially louder? I'm like you, don't want a lot of noise - just a nice rumble with some authority to it. How are the cat's attached to the stock core? I assume they separate easily without damaging the baffle or you wouldn't have been able to re-use it. Been looking at several true dual set-ups and am sure that is what I will do first. Thanks for the input.

[lv2ride56]

The fullsacs have a great sound and a lot of people love them, even the bigger cored ones. For me they were just to loud when I got out on the road. The cats are in a sleeve tack welded to the inlet end of the baffle. I ground those welds, removed the sleeve and cut the cat out. I'm sure you could get a replacement sleeve by going to a good muffler shop and having them cut one to fit. They are flared slightly at the inlet end to assist in fitting over the inlet of the muffler but I'm sure they could be matched by the muffler shop. Since it was a weekend I chose to just cut the cat out, replace and reweld the sleeve to the baffle before replacing the baffle into the muffler. I drilled a small hole on the bottom of the muffler and baffle shoulder (learned from FullSac baffle replacement) which I put a small self tapping screw into. I then used JB weld to put over the welds I ground out so the muffler looks original except for the small screw.

[walstibsf]

Just changing out the stock muffs or stock baffles with or without the cats over to something free-flowing will reduce heat significantly. The way the stockers are built, the exhaust gases only escape due to pressure build-up in the muff.  After re-mapping and changing to the Fullsac X pipe and cores, I tried the stock muffs for the heck of it.  Ran hot again, detonated, performance down....etc.

If I were worried about losing low end by going with true duals, I would install a set of Bassani Power curve true duals.  No loss on the bottom.  Conflicting reports on flow. Steve at Fullsac(whom I have the utmost respect for) said something to the effect of: Why take such a good idea, then tie it in a knot.  But if you look at the bends and bend radius's, they are gentle and well thought out.  Certainly no worse than the bend the front pipe takes directly out of the head flange.  I have run several sets of these and have em now on MY '07 RG.  Love 'em.

Another option, that works well for those concerned about noise, is Supertrapp muffs with the disc system.  Let's YOU change the sound and flow characteristics.

My .02...YMMV

[JCZ]

Fullsac is a quality baffle exchange. I didn't mention that I tried some 1.75 core fullsacs before I removed the cats from the stock baffles. They ran fine but were to loud for me. The stock baffles, without cats, have a nice bark when you are on it and a nice rumble at cruise without being to loud.

Not sure what you're talking about...... are you talking about the catalytic converter?  That's what's commonly referred to as the "cat".  Or are you talking about something else?   Just never heard of them being in the baffles.

It's not in the baffles, it's up in the header.  If you swith to the Fullsac X pipe, the cat went with your old head pipe.

[lv2ride56]

Not sure what you're talking about...... are you talking about the catalytic converter?  That's what's commonly referred to as the "cat".  Or are you talking about something else?   Just never heard of them being in the baffles.

It's not in the baffles, it's up in the header.  If you swith to the Fullsac X pipe, the cat went with your old head pipe.

I believe your right on newer bikes BUT the original post has to do with an 07 which would have the SE Street Performance touring mufflers. I don't have the part number on top of my head but can get it if you would like.
I know, from personal experience, that the cats (catalytic converter) are in the forward end of the baffles in each muffler. The internals of both mufflers are identical. There are NO obstructions in either headpipe or crossover. This was not a CA bike.
Very simple the check. Just pull one muffler and look into the inlet end.

[TinSpinner]

I believe your right on newer bikes BUT the original post has to do with an 07 which would have the SE Street Performance touring mufflers. I don't have the part number on top of my head but can get it if you would like.
I know, from personal experience, that the cats (catalytic converter) are in the forward end of the baffles in each muffler. The internals of both mufflers are identical. There are NO obstructions in either headpipe or crossover. This was not a CA bike.
Very simple the check. Just pull one muffler and look into the inlet end.

You are absolutely correct. I pulled the stock mufflers yesterday, the cat is in there on the '07. I put a set of Samson pipes on that a buddy loaned me to use while I get the re-core done. After seeing the bike with smaller diameter pipes it looks like something is missing. The stock 4" mufflers with heat shields look better to me, enough mass to fill in the area below the bags. The Samsons are a bit too loud for my taste, great sound just a little too much volume. Easy to tell with the stock head pipes that most of the exhaust exits on the right with this set-up as that is where most of the sound comes from. I could tell right away that the bike was running better and some cooler. although a bit rich. I'll wait until I get all the mods done before I have it tuned though.

[jcd520]

I ride with a buddy who has a B/O 2007 SE Ultra . He just got a map from Steve and put it in his bike and it made a huge difference in heat, performance , mileage, everything. He just has true duals and Rineharts , Steves map , and nothing else. Bike runs great now and really much cooler. Try it , you will like it!