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[Older Guy]

I have 2011 cvo SG , Motor is stock with only rinehart pipes. Will true duals give me anythging more. What I am asking is it worth spending the money. I do not intend to add a tuner.
        Older Guy

[SERK3]

The system you have on your 2011 is better than true duals, From what i have been told, it works more like a 2 into 1, again thats just what i have been told  , when i went with duals on my 07 i had to go with a tuner, I'm sure someone on here will chime in and give you better info. 

[mark]

I know someone with more "mechanical knowledge" will chime in, but true duels will rid your bike of the catalytic converter, which is adding heat and restricting your engine.  The posts that follow will advise you to get a tuner/different fuel map if spending money for true duels.  I would imagine adding Rineharts and true duels w/o addressing fuel/air will cause performance problems.

BTW, when I modified my exhaust (Fullsac stage 1: header, baffles, TTS Mastertune) I had a noticeable increase in power.

IMO, getting true duels w/o a tuner would be like getting half a haircut.       

[Midnight Rider]

True Duals typically don't perform as well on the low end, but there are exceptions to every rule.  I take it you have Rinehart slip-on mufflers?  One route to consider would be the Fullsac X Pipe in order to get rid of the catalytic converter (and a bunch of heat), but I would not change out the header pipe on the bike period without adding a tuner to add fuel...it's already lean, and getting rid of the stock header is just going to make it leaner.  The Fullsac lets you use the stock heat shields and maintain the stock look, so it's less expensive, leaving some money to buy a TTS Mastertune or other tuning device.

[Older Guy]

Thanks for the info,I am happy with the performace as it is .think I will leave it alone and spend money elsewhere.
 Older Guy

[scttgr8]

try a set of RCx slip ons...noticeable sound improvement!!

[Older Guy]

Do you have a link?
Older Guy

[Boxman88]

Straight from the shop. You don't have to tune but you won't get much out of it.

[glens]

Well I'll step in with the voice of reason, then.  Yeah, the bike will run changing the exhaust plumbing and not addressing the ECM programming, and it probably won't even explode.  However, chances are almost certain that even if you were to do nothing else to the bike but fetch a TTS tuning kit and comprehensively make and use a few v-tune runs you'd wind up with a smoother running engine.  It would pay for itself in short order just on pure riding satisfaction.

If you also get rid of the cat exhaust you'll shed a ton of heat plus reap the benefits of uncorking the system.  Just don't get carried away and put some wide-open system on, even if it sounds great, or you'll really risk losing bottom-end throttle response at the expense of whatever may be gained up top.

Yep, the bikes are lean from the factory but letting the ECM try to accommodate breathing changes all by itself won't really result in leaner overall running after sufficient ECM self-learning time, but it surely will result in running-quality degradation.

[Midnight Rider]

I have nothing to base this on, other than "common" knowledge, but the stock Map in the ECM is only capable of a certain amount of changing, and cannot really accomodate a change in the total exhaust system...slip-ons, yes, but a full exhaust system, I don't think so.

The bottom line is that the bike, even stock, will run SO much better, with regards to driveabilty, with a change to the ECM via TTS or whatever, that it's worth the price of admission.  Throttle response alone is worth it.

[do-dahman]

Good info, really enjoy this site. I have V&H Ovals on my stock headers. I am concerned how much louder adding V&H Duals or Fullsac X pipes will be. All thoughts are appreciated.

[Boxman88]

Good info, really enjoy this site. I have V&H Ovals on my stock headers. I am concerned how much louder adding V&H Duals or Fullsac X pipes will be. All thoughts are appreciated.

I have the X pipe header and high output VH exhaust. Not as loud s my Rinhardt's were on my last bike. Great sound and performance.

[ottosails]

If you go the true dual route you will need to add a tuner.  In my experience the true duals will raise the torque sweet spot into the higher revs.    The sound of true duals with your motor will be amazing but you will lose the low torque stump pulling performance.  Don't be afraid to go with a tuner.  If you make any mods a tuner will be a must.

[do-dahman]

Good advice, I'm thinking of going with the PCIII ECM. Any concerns with this?

[Midnight Rider]

Good advice, I'm thinking of going with the PCIII ECM. Any concerns with this?

Nothing inherently wrong with the PCIII, but it's fairly old technology, and is a "piggyback" device, meaning it has to stay on the bike all the time, rather than making changes to the ECM itself.  If you're going with somethinglike the Fullsac setup than so many here use, I'd suggest the TTS Mastertune along with the header pipe and baffles.  The canned map provided with the TTS from Fullsac for that setup is really, really close to perfect.

Of course, it depends on if you're going to a tuner with a Dyno and he is more familiar with the PC product.  But the TTS is MUCH more sophisticated in capability.