Purplexing dyno results
Extreme HDF Member
Joined: Dec 2006
Posts: 10,045
Likes: 36
From: ST. Louis
The SERT is a programer that can be redone over and over again with different upgrade or while on a Dyno with an intial cost of about $500.
and yes they do have a "free flowing air intake" that they call a "Stage 1 AC". But that has nothing to do with the EMC.
Last edited by Texas Fat Boy; Oct 22, 2010 at 11:10 PM.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
Well I'm not 100% sure what I'm going to do with the pipes if anything. I'm first going to find out how the bike feels with the 106 and 551's. I'm going to have a dyno as well to see what that looks like and mostly to check the fuel settings. I'm taking off the SERT and putting on a power commander v with autotune. If the results are weak I'll have to consider a 2-1 or do the heads. I don't know. All I really want is more torque in the cruising ranges so anything up to 4000 rpms. Hopefully the S&S stuff will be enough.
A talented guy could give you a wonderful tune with that SERT.
Banned
Joined: Sep 2009
Posts: 7,580
Likes: 7
From: The Internet (& Dyer, Indiana)
Originally Posted by Texas Fat Boy 
Stage 1 and a SERT are not the same thing.
Stage 1 and a SERT are not the same thing.
If you tell my dealer to do a "Stage 1" it's a one time computer upgrade that cost about $165.
The SERT is a programer that can be redone over and over again with different upgrade or while on a Dyno with an intial cost of about $500.
and yes they do have a "free flowing air intake" that they call a "Stage 1 AC". But that has nothing to do with the EMC.
The SERT is a programer that can be redone over and over again with different upgrade or while on a Dyno with an intial cost of about $500.
and yes they do have a "free flowing air intake" that they call a "Stage 1 AC". But that has nothing to do with the EMC.
Road Master
Joined: Aug 2006
Posts: 1,148
Likes: 157
From: Banning, CA
PC-V with Autotune
with Autotune has changed the balance in their favor as long as the initial base
setup is correctly configured and a narrow auto adjust is selected. Those ridiculous
bikes like the BMW R1000SS are using them with great success - 20+ hp & torque.
And so how does that relate? Just pointing out that the PC-V Autotune is far better
than the PC III it replaced for newer Harleys. IMHO.
Stellar HDF Member
Joined: Sep 2007
Posts: 2,458
Likes: 671
From: Vancouver Island B.C.
With the PC III fine tune calibrations may not have as good as SERT, but the PC-V
with Autotune has changed the balance in their favor as long as the initial base
setup is correctly configured and a narrow auto adjust is selected. Those ridiculous
bikes like the BMW R1000SS are using them with great success - 20+ hp & torque.
And so how does that relate? Just pointing out that the PC-V Autotune is far better
than the PC III it replaced for newer Harleys. IMHO.
with Autotune has changed the balance in their favor as long as the initial base
setup is correctly configured and a narrow auto adjust is selected. Those ridiculous
bikes like the BMW R1000SS are using them with great success - 20+ hp & torque.
And so how does that relate? Just pointing out that the PC-V Autotune is far better
than the PC III it replaced for newer Harleys. IMHO.
Thread Starter
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Cruiser
Joined: Aug 2010
Posts: 163
Likes: 0
From: Bismarck, ND
The biggest difference between the V and the III is size and not having to add a hub to plug in the add ons. Choice of tuning devices for sport bikes is limited, and IIRC the PCV cannot access the closed loop areas of the BMW ecm. Tuning devices like the TTS, SESPT, Directlink and the old SERT are very similar to some of the top efi tuning systems in the automotive world. Again just my opinion but where these devices step up is when you change cams, throttle bodies etc. Having access to 20+ tables to adjust just adds up to the chance of having a better running bike. I also believe any bike will benefit from a proper dyno tune.
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The SERT isn't removable, since it is never "installed". The SERT is just a communication interface that allows the user to make adjustment to the ECM. Once a user writes a MAP with the SERT it is stored in the ECM on the bike and the SERT is unplugged. So even if you install a PCV the MAP on the bike is still going to be the tuned MAP from the SERT. You could take your bike to a dealer and have them re-flash your ECM to stock, or you could leave it the way it is. As long as you have your PCV dyno tuned or run the autotune you would be fine to leave it. Since you already have the SERT and you can't sell it (it's married to the ECM on your bike) why not have the SERT tuned to your build? You caould still use the PCV with autotune, the PCV has the ability to run 2 MAPS via a switch. You could have one MAP run on autotune and the other set to all zeros and run the SERT MAP, maybe have that MAP tuned lean and run it when your in traffic and the bike is hot.
Supporter
Joined: Feb 2008
Posts: 4,133
Likes: 147
From: Grays Creek, NC
Make sure its a SERT and not the SESPT (Screamin' Eagle Street Performance Tuner) http://www.harley-davidson.com/gma/g...bmLocale=en_US
When a buddy of mine bought his bike he was told it had the race tuner and he showed me the orange case from his saddle bag. It said right on the case "Street Performance Tuner ", not the same as the race tuner.
When a buddy of mine bought his bike he was told it had the race tuner and he showed me the orange case from his saddle bag. It said right on the case "Street Performance Tuner ", not the same as the race tuner.