newbee with question on open or closed loop for ecm
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Cruiser
Joined: May 2015
Posts: 124
Likes: 1
From: pennslyvania
newbee with question on open or closed loop for ecm
well hello to all, i'm a new member on the forum and learning alot about my new 2015 street bob, I'm looking at getting a power vision and autotune for the bike , i want to change my pipes to short shots and also my breather if needed.
I was asked if the bike is an open or close loop for the ecm, so if anyone has any info to help me out i would greatly appreciate any help
I was asked if the bike is an open or close loop for the ecm, so if anyone has any info to help me out i would greatly appreciate any help
Road Warrior
Joined: Jul 2014
Posts: 1,607
Likes: 8
From: Idaho
I'd suggest talking with http://www.fuelmotousa.com they have great deals on the power commanders and great knowledge on Harleys. The also double the warranty on power commander components in addition to being one of the lowest prices.
I believe you have a closed and open loop system. Iirc it's closed near idle and open beyond. Talk to the folks I linked though the understand better than I
I believe you have a closed and open loop system. Iirc it's closed near idle and open beyond. Talk to the folks I linked though the understand better than I
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24
It's a closed loop Delphi system and like all modern efi it transitions from closed to open etc. during various phases of operation. In closed loop mode (usually cruise throttle settings) it adjusts the afr and timing based on the feedback from the O2 sensors, temp sensor, etc. It also "learns" after multiple miles and readjusts the base program map to match what it has learned in operation. If you install a basic tuner module it will always be open loop ragerdless of the Delphi design. Powervision, TTS, Sert etc. utilize the closed loop function also. Your choice.
Really radical built engines usually have to go full open loop as the closed loop areas learn function usually screws up the base map timing and AFR by confusion from high overlap camshafts and such.
Really radical built engines usually have to go full open loop as the closed loop areas learn function usually screws up the base map timing and AFR by confusion from high overlap camshafts and such.
Ultimate HDF Member
Joined: Apr 2008
Posts: 5,384
Likes: 12
From: Out on Deranged
Hi and welcome to the multiple opinion board!
Well your first choice is perfect with the power vision,
but your second choice on the short shots, well most people would agree your going to come up ----SHORT---- LOL~!
You should get an air intake since the first two components won't do much untill you add the third.
LAMA has it right with the whole loop thing whoever asked you either doesn't know anything about the ecm's or was testing to find out how much you know.
Finally speak to fuelmoto as suggested, they will inform you and offer you a deal on the full package. As tufel suggested to you! cheers and good luck! let us know which way you went!
Well your first choice is perfect with the power vision,
but your second choice on the short shots, well most people would agree your going to come up ----SHORT---- LOL~!
You should get an air intake since the first two components won't do much untill you add the third.
LAMA has it right with the whole loop thing whoever asked you either doesn't know anything about the ecm's or was testing to find out how much you know.
Finally speak to fuelmoto as suggested, they will inform you and offer you a deal on the full package. As tufel suggested to you! cheers and good luck! let us know which way you went!
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24
As far as air cleaner goes its all in your decision they all are open element filters so pick the looks you want and go from there. Most are copies of the Ness Big Sucker in some form.
The advise others gave you to contact FuelMoto is excellent advice, they are incredible and will set you up and you will be more than happy.
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Tourer
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Road Warrior
Joined: Dec 2008
Posts: 1,810
Likes: 4
From: Out and about
I'll have to disagree. Optimizing a tune for the pipes is never a waste of time or money. While the pipes he's looking to install are far from ideal he would still benefit from the PV "basic" auto tune features vs. a canned map from a PC V or other piggyback type tuners. The bike will run as well as is possible for that specific combination of parts vs. just getting it in the ballpark with the others.
If you are going short shots or big radius they are basically only for looks and not made for your engine to run correctly so don't bother with autotune or an expensive tuner like a Powervision, because they are wasted on that type of exhaust.
As far as air cleaner goes its all in your decision they all are open element filters so pick the looks you want and go from there. Most are copies of the Ness Big Sucker in some form.
The advise others gave you to contact FuelMoto is excellent advice, they are incredible and will set you up and you will be more than happy.
As far as air cleaner goes its all in your decision they all are open element filters so pick the looks you want and go from there. Most are copies of the Ness Big Sucker in some form.
The advise others gave you to contact FuelMoto is excellent advice, they are incredible and will set you up and you will be more than happy.
Road Captain
Joined: Jun 2007
Posts: 716
Likes: 24
I'll have to disagree. Optimizing a tune for the pipes is never a waste of time or money. While the pipes he's looking to install are far from ideal he would still benefit from the PV "basic" auto tune features vs. a canned map from a PC V or other piggyback type tuners. The bike will run as well as is possible for that specific combination of parts vs. just getting it in the ballpark with the others.
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