Target Tune?
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Cruiser
Joined: Sep 2009
Posts: 149
Likes: 1
From: Somewhere in the US
Target Tune?
I currently have the Power Vision and really like it for what I feel in the seat. Will the Target Tune improve the tune the PV has already created and maintain a good tune in different climates and altitudes. I ride in a lot different temps and elevations throughout the year. Sometimes the bike feels as it does not perform as well as others. Will the TT make corrections so I don't have to run an auto-tune with the PV as often? Thanks.
Cruiser
Joined: Dec 2006
Posts: 163
Likes: 6
From: Central Nebraska
There are some pretty heated posts going on about this in the dyno room right now. A lot of various opinions about this. Seems the narrow band O2 sensors are doing a good job under most conditions.
Intermediate
Joined: Feb 2015
Posts: 31
Likes: 1
From: Hernando, MS
I added Target Tune to my PV during the winter.
I can say it runs better than before, but I also did a cam upgrade and heads at the same time so I can't compare the two.
I've pulled logs and viewed in MLV and so far my VE's are tracking on top of each other.
I can say it runs better than before, but I also did a cam upgrade and heads at the same time so I can't compare the two.
I've pulled logs and viewed in MLV and so far my VE's are tracking on top of each other.
Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
I currently have the Power Vision and really like it for what I feel in the seat. Will the Target Tune improve the tune the PV has already created and maintain a good tune in different climates and altitudes. I ride in a lot different temps and elevations throughout the year. Sometimes the bike feels as it does not perform as well as others. Will the TT make corrections so I don't have to run an auto-tune with the PV as often? Thanks.
Thread Starter
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Cruiser
Joined: Sep 2009
Posts: 149
Likes: 1
From: Somewhere in the US
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Cruiser
Joined: Oct 2005
Posts: 151
Likes: 1
From: North Carolina
Using target tune allows the bike to stay in closed loop most of the time. I found that the bike ran better throughout the powerband, but what really stood out
for me was the throttle response and increased torque below 2000 rpms, that would be from a standing start. This is also the part of the powerband that dynos never show
on their readout. It just made the bike so much more fun to ride.
for me was the throttle response and increased torque below 2000 rpms, that would be from a standing start. This is also the part of the powerband that dynos never show
on their readout. It just made the bike so much more fun to ride.
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Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
That is true. When I bought mine I asked Fuel Moto about the auto tune function, The function is really moot, because TT hits the tune as your riding anyway, you could run auto tune and save the map but there would be no point.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,075
Likes: 11,096
From: San Diego, CA
As I understand it:
Target Tune (TT) maintains very accurate closed-loop control of the engine, to the parameters of the tune map. It doesn't change or adjust the map, just exercises better adherence to the map loaded in the ECM because of the use of wide band O2 sensors v OEM narrow band O2 sensors. Because of the use of wide band O2 sensors, a larger portion, if not all, of the map is closed-loop v partial closed-loop and open-loop.
So, if you use TT for an auto tune, it is using the better efficiency of the wide band O2 sensors to dial in the VE tables of the current map. Creating a new map that is dialed in to your particular engine. This auto tune session will be better than an OEM basic auto tune because it is using the wide band O2 sensors to dial in the map. I would assume (oops, I made an assumption!) this tune would be more comparable to an auto tune pro session...
Now you have a better dialed in map. You download it to your ECM and now the TT will maintain a very accurate closed loop control of the engine, to the parameters of the better map...
If you start with a canned map (dyno tune would be a different story) for your bike/mods, it would seem that a TT auto tune session would yield better results than a non-TT, basic auto tune session....
It's possible that since the TT is just "converting" the signals of the wide band O2 sensors for use by the OEM ECM, that some of the efficiency of wide band O2 sensors is lost in the translation.... I don't know..
I'd like to better understand the TT process, let me know what I am missing...
