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[Jermar]

Not really liking the sound from my 13 Ultra, thinking of just installing the 2.0 muffler cores and screens with half the packing. Will I really need to add/go with a SERT and dyno tune or will I be happy with just the muffler upgrade? 

[Unbalanced]

To answer your original questions.  Can it handle just the cores, the answer should be yes, but it will still be lean, and the motor will still run hot.   think chestnuts roasting on an open fire 

The real question now becomes what your willing to live with.  The bikes come lean from the factory, then on top of that add in the catalytic converter.   You might consider decatting the exhaust, and adding the cores to the mufflers you have and tuning it or a new headpipe with your exisiting mufflers and FS cores.

Congrats on the new bike.

[deldago]

I ran my bike for 6 months with just the 2 inch cores with one wrap of packing in each side without issue.  Over the winter I changed to his head pipe and added the TTS with a map and it definitely runs a bunch cooler. Getting rid of the converter and adding some fuel was well worth the extra expense and effort in my eyes.

[Foot Loose]

I am also confused here.  I cut out the CAT the stock baffle and installed a new baffle from fullsac.  The bike came with a stock high flow air cleaner.  One shop told me to have Harley re-flash the bike, and the dealer told me if the bike runs good and no popping, good to go.  If the sun ever shines for two days in Michigan, maybe I get a ride out it and see how it runs. 

[deldago]

I am also confused here.  I cut out the CAT the stock baffle and installed a new baffle from fullsac.  The bike came with a stock high flow air cleaner.  One shop told me to have Harley re-flash the bike, and the dealer told me if the bike runs good and no popping, good to go.  If the sun ever shines for two days in Michigan, maybe I get a ride out it and see how it runs.

When you say CAT ,did you cut open up the head pipe and remove the catalytic converter honeycomb material or just remove the baffles in the mufflers? If all you did is change out the baffles you should be alright. Some guys have cut open the head pipe and removed the converter material to make their own version of a free flow header and welded the pipe back together, if that is the case then yes you should get a different tune done through a system such as TTS.

[Jermar]

Thanks for the replys and suggestions. I think for now I am going to just do the baffle upgrade/replacement and 1 wrap of packing and see if I like the sound and how she rides. Depending on what I think, will decide on changing out header pipe as well.   As for the heat issue I know all about that but it hasn't really been a issue so far. A SERT and dyno tune will take care of that issue along with some other things as well though, at least it did on my old 06 Ultra. 

[mjb765]

Thanks for the replys and suggestions. I think for now I am going to just do the baffle upgrade/replacement and 1 wrap of packing and see if I like the sound and how she rides. Depending on what I think, will decide on changing out header pipe as well.   As for the heat issue I know all about that but it hasn't really been a issue so far. A SERT and dyno tune will take care of that issue along with some other things as well though, at least it did on my old 06 Ultra.

Getting rid of the cat will also change the sound....just doing the cores may help a bit, but the cat is a big restriction in the exhaust and removing that will make a big difference. Your 06 was a different animal as far as the exhaust goes.

[Foot Loose]

I am also confused here.  I cut out the CAT the stock baffle and installed a new baffle from fullsac.  The bike came with a stock high flow air cleaner.  One shop told me to have Harley re-flash the bike, and the dealer told me if the bike runs good and no popping, good to go.  If the sun ever shines for two days in Michigan, maybe I get a ride out it and see how it runs.

Attached to the baffle, up front, was what I thought was the CAT.  I didn't think the CAT was in the head pipe.  If that's the case, I guess I have more work to do.  My bike is a 2014 Softail Deluxe, CVO

[deldago]

Sorry for the confusion, on the touring bikes you have to replace the head pipe or open it up and remove the cat material and weld it back up. From what I understand the cat is in the mufflers on the Softails. If you remove the cat and go to free flow baffles I would definitely want to change the fuel map with a tuner. That is a lot more flow than the stock tune can handle in my opinion. Of course you know what they say about opinions.

[Midnight Rider]

I am also confused here.  I cut out the CAT the stock baffle and installed a new baffle from fullsac.  The bike came with a stock high flow air cleaner.  One shop told me to have Harley re-flash the bike, and the dealer told me if the bike runs good and no popping, good to go.  If the sun ever shines for two days in Michigan, maybe I get a ride out it and see how it runs.

On your bike, I'm pretty sure that replacing the baffle with the Fullsac version removed the CAT, so you are flowing a LOT more air through the system now. A HD dealer cannot "reflash" your bike to accomodate the changes.  As it stands now, you are running a very lean A/F mixture...the bikes already run lean with the factory exhaust, so removing the restrictive CAT makes a bad situation worse.  IMO, you need to tune the bike with TTS, SEPRT, or some other tuning device of your choice. If it was me, the first thing I'd do is contact Steve at Fullsac and see if he has a canned map for your bike that can be installed with the TTS.  If he does not, you need to find a COMPETENT tuner and ask him/her what device they prefer using.  HD dealers do NOT always have people who know what they are doing with a Dyno...just having one does not qualify.

[Foot Loose]

What's another $800 anyway?  I know the factory bikes run lean, and it only makes sense with the open exhaust that the bike can only be leaner, but some say the ECM can adjust some. Originally the dealer had suggested using a screaming eagle tuner, a better match with the screaming eagle contents now.  But, I hear a lot there are good and bad tuners.  I have asked the dealer if they tune each cylinder, which he said they do. He said the tune would take about 4 hours.  How do you know if you have a good tuner before hand? 

[deldago]

If you buy the TTS tuner from Fullsac and he has a map for your bike all you need is a laptop to install it. At about $400 it is definitely the best bank for the buck out there. It would be worth a call to them to find out. I am by no means an ace mechanic but I was able to figure it out myself with some help from the pros on here. If you do have to have it tuned locally ask around, the good tuners always have a good reputation and most bikers are more than willing to tell you who the real ones are versus the posers.

[Midnight Rider]

What's another $800 anyway?  I know the factory bikes run lean, and it only makes sense with the open exhaust that the bike can only be leaner, but some say the ECM can adjust some. Originally the dealer had suggested using a screaming eagle tuner, a better match with the screaming eagle contents now.  But, I hear a lot there are good and bad tuners.  I have asked the dealer if they tune each cylinder, which he said they do. He said the tune would take about 4 hours.  How do you know if you have a good tuner before hand?

Who is "some"?  While it is true that the ECM can compensate for small changes, it is not capable of large changes.  Removing the CAT is a pretty large change.  Also, the statement that the dealer told you about the SEPRT being "better" because of the Screamin' Eagle parts on the bike is pure BS. Not saying it is not a good tuner in the right hands, but the TTS is equally good, and in some ways better.  You can save your stock tune in the ECM with the TTS before changing the tune in the ECM which allows you to put the bike back to stock in case of any warranty issues/questions.  Regardless, IMO the first step is to contact Steve at Fullsac to see if he has a map for your bike using the TTS.

[Foot Loose]

Ok I guess more questions for the dealer.  The dealer also mentioned using other tuners, involved wires and possibly devises to jam into the bike.  As for other modifications down the road, today there are no plans.  I'll email Steve and see what he might have. 
Thanks!

[HOGMIKE]

As always: "Buyer beware"...........

Do your homework if you are interested in finding out what works and what doesn't.
Don't rely on just one source, and "it must be true, I read it on the internet".

JMHO of course.