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[RGMax]

I just had the V&H Power Duals and Hi Outputs installed on my 2012 CVO RG and the Dealer said not to Dyno Tune until I get 1,000 miles........Is this correct?

[glens]

Maybe.

I'd do it now, though.

[tlr]

you will read several schools of thought on this one.  Your dealer is suggesting that the engine get properly broken in prior to a dyne since the dyno itself puts a lot of strain on the engine due to the high revs.  Another school is that you can break the engine in much quicker.  I am installing the same as you and my dealer has said the same.  I am sure that he did a download to your ECM to get you close, so there is no harm waiting awhile.  during that time you can find a very good tuner in your area and have it done there as opposed to the dealer.  just my 2 cents

[glens]

Just some random thoughts.

Assuming the bike is new, you really can't break it in any better than on a dyno.

I'm pretty sure there ain't no "download" for that bike, and if there were, it wouldn't be free, and it wouldn't be right.

If you were going to tune it yourself with say a TTS or, if you had to, a SEPST, why not load up a close base calibration and v-tune (or almost as good, smart tune) it right off the bat?  Even if you were going to get it professionally tuned, later, why not do it (the v-tune/smart tune) right off the bat?  Break it in on a calibration more suitable for the purpose.

Why would you want to "break in" your new engine on a maybe-almost-close EFI calibration?

Perhaps the best thing for you, depending on your mindset regarding tuning, would be to run the bike totally stock until 1000 miles, then make the changes and get it tuned at the same time.

For me, when changing out the exhaust, I would tune it now.

[RGMax]

I would have gone stock until the 1000 miles had I known the dealer had planned to wait on dyno. But now that they are installed, can there be any harm done waiting for the 1000 miles until the dyno tune? If I insist on dyno tune now, will the bike need another tune possibly after break in? Can the high revs during dyno tune harm the engine if I dyno tune now? Any other thoughts would be appreciated.

[RGMax]

And I'm going with SEPST. I asked the guy doing the dyno tune before I purchased the tuner which one he suggested. I think it is better to go with the tuner he has the most experience using.....

[Deep Blue Dives]

I would get it tuned now.  There is no way the stock map of the bike will perform to the new specs of your exhaust system.  It could be rich or lean in different parts of the power band, and I am sure it wouldn't be a great ride.

I had the dealer load a canned map with the SE Tuner after making the same exhaust change - plain and simple it was simply horrible.  It was running the rear cylinder way to lean, and the bikes throttle response sucked.  Here is a link to my thread about success tuning - http://www.cvoharley.com/smf/index.php?topic=71964.0 .

You could do more damage to your bike waiting IMO.  I know there are better gear heads in the forum that will have plenty of great advice too.  There is a great thread about breaking in a motor too, that I found very very informative.

[JCZ]

And I'm going with SEPST. I asked the guy doing the dyno tune before I purchased the tuner which one he suggested. I think it is better to go with the tuner he has the most experience using.....

I'm betting your tuner works at a dealership.  Assuming that's the case, the question that comes to mind is why didn't they also tell you to wait until you have the 1k miles before doing the mods?

Not judging the tuner at your dealership but generally speaking, you'll not find the really good tuners working at a dealership......you're going to find them working at the independant shops.  At an independant shop they're not force fed (and forced to use) the HD brand tuners, parts, etc. but instead can use what ever brand there experience tells them is best suited for a given situation/build.  Again, generally speaking, at a dealership they're going to be pushing HD products.

On a side note....there are quite a number of dealerships that dyno tune a bike with 100 miles on the bike.  The motors are built to a lot closer tolerances than they were back in the 50s and 60s and because of that, the rings seat a lot faster.

[glens]

I don't have a current SEPST calibration listing on hand so can't say with authority, but I'm thinking the list of calibrations for that bike is entirely populated with EPA-compliant (which doesn't necessarily denote "undesirable" in and of itself) files for Harley-only parts combinations.  Harley doesn't make a "true dual" exhaust for that bike, so no matter what else, they aren't going to have a base calibration that will be suitable-enough to just run it.  You could install the closest one they have and run a few smart tune sessions against it and get it definitely close enough to use for breaking in the engine.  That's what I'd do.

If the SEPST is still unopened, I'd take it back and get a TTS kit instead.  Very much more capable in terms of engine tuning and there are other facets where it shines much more brightly.  The only downside in comparison is that with the TTS you have to lug a laptop or netbook/tablet along while DIY datalogging.  But the flipside of that is that you can obtain much better datalogs even if they're only 15 minutes long like you can do with the SEPST by itself.  You can lug a computer along with the SEPST, too, and take longer data collections, but so far as I know your only option for data sets gives you 1/2 second sampling intervals (only 1 in 10 possible data points captured @ 2400 RPM).  In terms of the "professional" tuner maybe not being familiar with TTS (proper), hopefully they've been doing it for a couple years anyway and should be familiar with the old SERT, and if so, they will immediately recognize the TTS software interface and should be able to jump right in with both feet.

The notion that the tuning interface to use is the one the tuner is most familiar with is only valid to a point.  What if they're most familiar with the PC-III or PC-V?  You're not going to be able to run closed-loop at all with the former and with the latter it's another several hundred dollars and more stuff to stow on the bike, effectively permanently, if you want to run closed-loop.  But even then the ECM itself will be running open-loop and will therefore provide none of the learning adaptability it came with from the factory.

No, the learning the ECM can do is not suitable for adapting to different breathing parts.  Well, maybe a high-flow air cleaner or more-open mufflers after the in-header-cat, but still not ideally.  Think more in terms of different fuels you'll pick up over time, your fuel pressure regulator (or pump) getting tired over time, or your injectors having good days, bad days, or just old and tired days, etc.  Even if the bike ran "okay" on whatever "close" calibration was in the ECM with different breathing gear installed, the adaptable range won't be fully available, at least in places, for its intended purpose any longer.

[ultrafxr]

I and several of my friends have had our brand new bikes dyno tuned at our dealer (who has a very competent tech doing the tuning).  In my case I got a replecement engine for my '07 cuse when the original failed at about 22k.  Tech dyno tuned it immediately upon install and I have over 80k on it with absolutely no problems - no oil useage at all.  Same result with friends also - no problems.  So imo there is no downside to dyno tuning a new engine - if the tech is competent and knows what he is doing.