Here is my advice, call KW and ask if there is any difference between the full system 2-2 header and the standalone aggressor header. If no difference then you would have the option to run other M8 mufflers with 2 different sizes as opposed to the full 2-2 system which is limited to mufflers with a 2 inch inlet on each side. I was told the full 2-2 system was developed all together so does that mean it performs better, possibly but I can’t answer that for certain. I would call KW for their advice.

 

I spoke with KW today and have the answer to that. The full system is 2 inch step system so to speak. The header mates with the exhaust mufflers that come with the full exhaust. If you want to use the slip-ons you must use the Aggressor header since each side is a different diameter.
While on the phone I asked what about big bore kits and what is the recommended exhaust setup. KW said ditch the slip-ons if you are going 124 or 128 kit and use the full exhaust system for better performance.
If your running a 114 you can use the full header with the correct baffles.
In my case I was told that the SE 122 kit can handle the full system and would take advantage of it using performance baffles.

Drag specialties has a full exhaust in NY, may just order it to get it and wait for the tuning info to come in.

Anyone interested I have Rinehart DBX 4.5's and will have KW 4.5 slip-ons for sale. The KW's are mint, the Rinehart's have a little scuff on an end cap (easy 1 second touch up I will do).

 

Update on my exhaust, I ordered the louvered baffles today. And a Fullsac MX head pipe.
I wanted to go full KW but honestly the $$$ was getting insane for the exhaust. I didn't want to now have KW and Rinehart slip-ons taking up space waiting for a buyer at a discount.
I wanted the preserve the KW slip-ons I have and love. I followed your comparison of the baffled louver versus the other KW choices. Also Moonshine HD loves the KW full system but they also love the KW slip-ons & Fullsac combo with the louvered baffle if your doing 2-1-2. Multiple dynos with them with great results. My neighbors don't mind a loss of noise however slim.

 

After putting those inserts in you may just find your current motor runs like you want! Let us know what you think.

 

LOL watch your probably right. Now go see the other thread. It's gorgeous out, gym then I ride!
Enjoy the weekend all!

 

Yes, let us know..

 

Got the performance baffles today and installed them. So upon initial start up, much quieter at idle, enough that the neighbor's might appreciate.
Once the bike warmed up no doubt quieter idle. The loud banging warrior drums had changed to a deeper softer sound.
Honestly may be to quiet for some, still sounds like a HD but not obnoxious.

Off I go, 200 feet down the road, Woah? Wow!
At initial launch the bike immediately went back to the similar loudness and sound I had gotten used to.
But at first I did not believe it, I thought decel back fire? Nope.
Now when you let off the throttle the engine growls!! I mean a great decel growl. Very similar to the Rinehart DBX's but not raspy, Deep!
I honestly could not believe it, I liked this pipe but wow now I love it. Almost the DBX with a baritone rather then raspy pitched bite.

Got to the open roads, acceleration was the same or a bit better. I was spending so much time trying to analyze it all the road was flying by.
I did the SE Power cam with the 122 kit rather than the Torque cam. So after the startling low end and up improvement when I added the KW slip-ons.
Now mid range and high rpm have improved even more.
On the highway hit 3500-3700rpm it feels like something switched on and bang there you go.
The bike effortlessly flies up to 100+mph like its nothing, the bike is no longer under powered (not a liter bike yet, but soon).
Really you can just roll it up and down between 4000-5000rpm, it wants to take off. Passing, changing lanes and accelerating is effortless in 5th gear.
In 6th hitting the speed limiter would be nothing, I topped out at 107mph stretching it out.

I know with the SE 122 kit the redline is supposed to be raised to 6200rpm. But the bike never felt like it wanted to go there or even over 5000rpm.
Now with the baffles it is climbing to and thru 5000+rpm. The only caveat I feel is the bike needs to be properly tuned.
At 5500rpm it feels and sounds like it wants fuel, as if fuel injection jets are clogged or not all cylinders are firing (that statement is a general example I know it is only two cylinders (trolls)).
Could be the rev limiter.

Based on all the threads I have read here 90% or more members would be totally satisfied with this build. And it is operating on a 117 power cam map!! And still 100% under warranty.

Honestly I am really bummed I can't do the SE 131 kit and just tweak it a little (and retain the warranty). Head pipe, exhaust, real tune, dyno. Sucks so I'll do the cam also, nothing to lose.
The Fullsac pipe is due Wednesday. I know if I add that pipe, a tune and a big cam to my current SE 122 kit. This bike would scream and maybe I could be satisfied?
I'll never know, not spending $$ on the camshaft labor without swapping out the top end.
28 days and counting until it becomes a SE 131 kit with warranty killing aftermarket goodies.

 

sounds like a blast...and not trying to be the warranty police..but I don't think this is a true statement "And still 100% under warranty"...you bought a SE kit and used the power cam SE 462 instead of what the kit came, and used an SE calibration for a 117....and is the KW header catless? in your OM section under limited powertrain warranty it states that even if using SE parts and installed by an HD dealership if they were not tested and approved parts for the year and model they are not covered..in other words you can't just mix and match any old SE parts and software tunes and expect the warranty to be valid even if done by a dealership..doesn't sound like you really care at the end of the day but stating 100% covered by warranty with what you describe just ain't true as far as the MOCO is concerned..maybe your dealership is offering to foot the bill regardless of the circumstances but they don't determine warranty claim status..just sayin'..

 

Still using the stock head pipe. Only added the KW slip-ons a couple of weeks ago and the performance of the bike improved immensely over the Rinehart's.
As far as the tune, HD dealer installed SE 122 kit (pieced together), SESPT does not have a 122 kit power cam option. I was told they would use the 117 map. Runs great.
Aside from the slip-ons all HD dealer installed pieces except for lighting.

About the warranty, honestly I am not worried in the least. Here is my position, if the dealer won't sell me Khrome Werks exhaust because they are not EPA compliant.
But will do a 122 kit install just to make some service/parts dept. cash then shame on them.
If you think if I had a claim denied because of the dealers negligence/stupidly I wouldn't be up their azz so far its not funny. Then think again.
I have the means and legal assistance that it would be insane for the dealer not to self warranty a potential claim for what a couple of grand? Pissing contest over.

I research everything prior to purchasing it. This bike was totally spontaneous (I knew I loved the look of the bike).
I really did no research on other than, was the price of a CVO worth the difference over an Ultra limited.
I did not think so, more importantly what I wish I had researched was owner satisfaction with performance etc. I would have had a 131 kit done prior to delivery.
I have mentioned and will mention again I have owned two bikes in the past 20 years.
Gen 1 and 2 Hayabusa's, those bikes were pure perfection!!! Unless you wanted to trick them out an exhaust, power commander and some trinkets were all you needed (some may disagree ).
And on the Busa forums all you found were cheerleaders! Mistakes or errors were learning experiences to share positively. Here wow, seems like harsh criticism is easy to find.
You forgot a washer!! Flame On!! LOL

So anyway those performance inserts, the decel growl is great, lol!!
Prior to the KW's I couldn't get the work done fast enough.
I am definitely pacified, yesterday was a fun ride (the most fun yet).
I'll be breaking in those 131 cylinders taking in the foliage soon. Yes!!!

obtw next on my list is braketech 320 rotors, ferodo rotor, ohlines front suspension, dakota digital gauges (?).
extended swing arm??? kidding!

 

Glad it worked out for you, I was 99% sure you would be happy. The eclipse finish on the inlet of my mufflers turned a little blueish and KW sent me 2 brand new mufflers no questions asked, outstanding customer service!