Varied codes
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Joined: Jun 2021
Posts: 22
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From: Iowa
Not being familiar with the Power Commanders, I looked up the install instructions....
The Power Commanders change your tune Map to an all Open loop map, no need for O2 sensor feedback.... The O2 sensors are not used with a Power Commander...
If you remove the Power Commander for more than a test... I would suggest reinstalling your O2 sensors... you may or may not have caps on the wiring harness O2 sensor connectors... The PowerCommander Install instructions I found online (different year) says the kits include "O2 Optimizers" that plug into the wire harness in place of the O2 sensors.
The default OEM tune has a portion of the map that is closed loop, needing the O2 sensor feedback.... Without the Power Commander, you'll be back to the OEM tune.
I am not sure of the issues with running an OEM tune without the O2 sensors.... but at the least I would assume that would trip an O2 sensor code, and could negatively affect performance and fuel mileage...
IMHO..... I wouldn't run the bike with the OEM tune, without reinstalling the O2 sensors, for more than a short test run to see if the Power Commander was causing the issues...
The Power Commanders change your tune Map to an all Open loop map, no need for O2 sensor feedback.... The O2 sensors are not used with a Power Commander...
If you remove the Power Commander for more than a test... I would suggest reinstalling your O2 sensors... you may or may not have caps on the wiring harness O2 sensor connectors... The PowerCommander Install instructions I found online (different year) says the kits include "O2 Optimizers" that plug into the wire harness in place of the O2 sensors.
The default OEM tune has a portion of the map that is closed loop, needing the O2 sensor feedback.... Without the Power Commander, you'll be back to the OEM tune.
I am not sure of the issues with running an OEM tune without the O2 sensors.... but at the least I would assume that would trip an O2 sensor code, and could negatively affect performance and fuel mileage...
IMHO..... I wouldn't run the bike with the OEM tune, without reinstalling the O2 sensors, for more than a short test run to see if the Power Commander was causing the issues...
I can't help but think with the gauges reading more normally that the PC is having some kind of negative effect. I've heard you can send them in for credit on a new one so maybe ill.give that a shot.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,018
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From: San Diego, CA
Ok, ill look into those plugs. Ive got several connections under the seat that just have plugs installed in them. I bought the bike this way so I don't have the O2 sensors.
I can't help but think with the gauges reading more normally that the PC is having some kind of negative effect. I've heard you can send them in for credit on a new one so maybe ill.give that a shot.
I can't help but think with the gauges reading more normally that the PC is having some kind of negative effect. I've heard you can send them in for credit on a new one so maybe ill.give that a shot.
I'd remove the plugs from the O2 sensor connectors and reinstall the O2 sensors. Then you could get a flash tuner..... sadly they have skyrocketed in price lately.. This is my favorite option.... but I never stop at Stage I....
You could opt for a new Power Commander V for around $400... and not mess with the O2 sensors... If you are just going to be satisfied with the Stage I, this would be the cheapest, easiest option....
Good luck with your decision and your further diagnosis....
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