Surging
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Joined: Aug 2018
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From: SC
Surging
This may have been asked but searching is tough on my tablet.
I have 2009 Sportster xl1200c, I installed a Cobra 2 into 1, all else is stock. I then added a Cobra fi2000 with closed loop, meaning still have O2 sensors in the circuit. The bike surges at cruising speeds and from Cobra and other research it is supposedly normal. But I hate it. I switched gears to change engine speeds which stops the surging temporarily. Cobra says not to change first pot on tuner. I haven't fooled with that dial yet because don't want backfiring. It runs great otherwise. What do I need to do to get rid of that surging feeling? Remove O2 sensors and get a different tuner? Wish I had researched a little harder before I bought the tuner.
I have 2009 Sportster xl1200c, I installed a Cobra 2 into 1, all else is stock. I then added a Cobra fi2000 with closed loop, meaning still have O2 sensors in the circuit. The bike surges at cruising speeds and from Cobra and other research it is supposedly normal. But I hate it. I switched gears to change engine speeds which stops the surging temporarily. Cobra says not to change first pot on tuner. I haven't fooled with that dial yet because don't want backfiring. It runs great otherwise. What do I need to do to get rid of that surging feeling? Remove O2 sensors and get a different tuner? Wish I had researched a little harder before I bought the tuner.
Last edited by Lwood10; Jul 9, 2019 at 11:53 AM.
Road Warrior
Joined: Nov 2013
Posts: 1,842
Likes: 1,975
From: Eastern,North Carolina
Some will say go with a Powervison, but my fix was dumping a tuner that still used the o2 sensors and went with a FuelMoto Micro EFI that eliminated the O2 sensors.
https://www.fuelmotousa.com/series-1...efi-tuner.html
https://www.fuelmotousa.com/series-1...efi-tuner.html
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Advanced
Joined: Aug 2018
Posts: 61
Likes: 8
From: SC
Some will say go with a Powervison, but my fix was dumping a tuner that still used the o2 sensors and went with a FuelMoto Micro EFI that eliminated the O2 sensors.
https://www.fuelmotousa.com/series-1...efi-tuner.html
https://www.fuelmotousa.com/series-1...efi-tuner.html
Road Warrior
Joined: Nov 2013
Posts: 1,842
Likes: 1,975
From: Eastern,North Carolina
MPG is fine, around 45 mpg on the highway. Plus they give lifetime support. Tell them any issues you have and they will adjust and email you a new map.
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