Quick FP3 question.
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Tourer
Joined: Mar 2015
Posts: 334
Likes: 12
From: Central Cal
Quick FP3 question.
I was told that upon installing the FP3 the O2 sensors are no longer being utilized therefore are not needed. I always thought that O2 sensors were needed to monitor the engine and tell the FP3 what is needed to maintain the pre-determined map. What is real deal here?
Thanks,
Rich
Thanks,
Rich
Tourer
Joined: Oct 2015
Posts: 391
Likes: 52
From: Pittsburgh, Pa.
Whoever told you that is FOS! The 02 sensors is exactly where the auto tune gets readings from and also what keeps the bike in closed loop. The only time they're not used is temporarily while the bike gets up to operating temp (runs in open loop til it does) and if you manually richen the A/F ratio more than 14.35:1 in the fuel map. If you removed them or just left them unplugged I would guess it would probably throw a code and your check engine light would be on.
Outstanding HDF Member
Joined: Mar 2014
Posts: 2,452
Likes: 23
From: Michigan
I was told that upon installing the FP3 the O2 sensors are no longer being utilized therefore are not needed. I always thought that O2 sensors were needed to monitor the engine and tell the FP3 what is needed to maintain the pre-determined map. What is real deal here?
Thanks,
Rich
Thanks,
Rich
Road Warrior
Joined: Mar 2012
Posts: 1,522
Likes: 351
From: Holly Springs, North Carolina
Whoever told you that is FOS! The 02 sensors is exactly where the auto tune gets readings from and also what keeps the bike in closed loop. The only time they're not used is temporarily while the bike gets up to operating temp (runs in open loop til it does) and if you manually richen the A/F ratio more than 14.35:1 in the fuel map. If you removed them or just left them unplugged I would guess it would probably throw a code and your check engine light would be on.
Road Master
Joined: Feb 2010
Posts: 905
Likes: 51
From: New Jersey
Didn't get any black clips with mine. Just the FP3. Plugged it in, downloaded the map, and it's been running great.
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Outstanding HDF Member
Joined: Mar 2014
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From: Michigan
Any pictures? I don't recall getting any black clips either.
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Thread Starter
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Tourer
Joined: Mar 2015
Posts: 334
Likes: 12
From: Central Cal
I don't have any pictures as this whole situation is what my cousin is going through. however, I too am planning on going with V&H Dresser Duals with the FP3 and I am skeptical of disconnecting the O2 sensors. Through some more research, I found that in certain situations V&H does recommend Eliminating the O2 sensors and using an O2 eliminator to trick the computer into thinking it has correct resistance values under closed loop.
