HARLEY: 2008 Open or closed loop?
#1
10-08-2018, 12:34 AM
2008 Open or closed loop?
I have looked but cannot find the answer to this simple question about the 2008 EFI system.
Also, asking for a little more detail, is there a model year threshold for siginficant changes to the Twin Cam EFI systems in terms of which is ECU used?
Thanks for sharing.
Also, asking for a little more detail, is there a model year threshold for siginficant changes to the Twin Cam EFI systems in terms of which is ECU used?
Thanks for sharing.
#2
10-08-2018, 10:13 AM
Road Master
~’96-2001 touring bikes have Magnetti Marrelli systems-All open loop.
2002-present -touring models-Delphi system.
2001-present- all softails-Delphi system.
pre 2006 all open loop.
2006 Dynas only- closed loop capable.
2007-present -all models- capable of closed loop
2007-present -touring— electronic throttle control
2002-present -touring models-Delphi system.
2001-present- all softails-Delphi system.
pre 2006 all open loop.
2006 Dynas only- closed loop capable.
2007-present -all models- capable of closed loop
2007-present -touring— electronic throttle control
#5
10-08-2018, 08:18 PM
#6
10-08-2018, 08:24 PM
Road Master
As delivered, sections of the map are closed loop. Mainly cruising rpms and loads. Outside of these parameters, it is open loop. Tuning devices allow the tuner to decide what parts of the map are open or closed loop— therefore the statement “closed loop capable”. Your 2008 model should have O2 sensors in the exhaust. If not, someone may have chosen not to be closed loop capable via a tuning device.
Last edited by jbarr1; 10-08-2018 at 08:25 PM.
#7
10-09-2018, 08:41 AM
Look on the cross member of the frame above the voltage regulator. Is there a two pin female plug? Might find one by looking on the right side of bike by starter. These are the plugs that the O2 sensors would plug into.
Capable is misleading. A 06 touring is capable, but that can get confusing for this discussion.
Capable is misleading. A 06 touring is capable, but that can get confusing for this discussion.
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