No ECU Download or Fuel Management...
#21
08-12-2011 | 08:15 PM
Road Warrior
Joined: Apr 2010
Posts: 1,403
Likes: 72
From: North Dakota
06 to current will return the closed loop (99% of most riding conditions) to the factory EPA approved mixture. You are doing no damage. The 2006-08 used AFR tables and 2009-12 use Lambda tables. Slightly different way to get to basically the same result.
#22
08-12-2011 | 08:26 PM
Club Member
Joined: Feb 2008
Posts: 11,474
Likes: 23
From: Passaic County, NJ
I am using a terry components TV3. No issues at all except an idle that changes when the bike gets hot and according to HD that is engineered into the bike to keep the oil from getting "hot spots". The TV3 turns on after warming the bike for 2 minutes. I am running Bub straightaways pipes and stock air cleaner. Really good power. Left a few riders sitting in the dust without even trying recently. Thing just hauls. I will be adding a SE perfomance air cleaner set up this weekend. I just rode 1500 miles in all weathers , rain included and did not have any problems. I know my stock setup ran really hot and I burned my leg a lot. My 2 cents.
#24
08-13-2011 | 07:20 AM
Banned
Joined: May 2005
Posts: 12,594
Likes: 9
From: Bama
That is not correct. The factory mapping is pretty lean as it comes. If you open up the intake and exhaust then you change the volumetric efficiency of the motor and it will run lean. The computer can only give fuel in the amount it was programmed to do. If you think otherwise, you are mistaken. xIED's only fool the computer into richening up the mixture by bypassing the O2 sensors. That only works in closed loop which is pretty much only when cruising. They do nothing for idle and throttle under load. Even then they only cause the computer to add fuel to whatever the factory map is set to run "rich" which is still lean in most applications. If you think that the computer infinitely adjust fuel, it doesn't. It just refers to the mapping that is programmed into is and gives a predetermined amount of fuel for rpm and throttle position that is detected.
#25
08-13-2011 | 08:00 AM
Club Member
Joined: Feb 2008
Posts: 11,474
Likes: 23
From: Passaic County, NJ
That is not correct. The factory mapping is pretty lean as it comes. If you open up the intake and exhaust then you change the volumetric efficiency of the motor and it will run lean. The computer can only give fuel in the amount it was programmed to do. If you think otherwise, you are mistaken. xIED's only fool the computer into richening up the mixture by bypassing the O2 sensors. That only works in closed loop which is pretty much only when cruising. They do nothing for idle and throttle under load. Even then they only cause the computer to add fuel to whatever the factory map is set to run "rich" which is still lean in most applications. If you think that the computer infinitely adjust fuel, it doesn't. It just refers to the mapping that is programmed into is and gives a predetermined amount of fuel for rpm and throttle position that is detected.
#26
08-13-2011 | 08:42 AM
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Joined: Sep 2010
Posts: 2,357
Likes: 8
From: Pa
#27
08-13-2011 | 08:48 AM
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Joined: May 2005
Posts: 12,594
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From: Bama
What i can say on this is, i have an exhaust and a big sucker ac. So i bought the tts mastertune tuner. After setting up a programmed calibration from there list that has the mods i have, it still shows the afr will be 14.6. Thats exatly what it would be if i didnt have the tuner.
#28
08-13-2011 | 08:54 AM
Club Member
Joined: Feb 2008
Posts: 11,474
Likes: 23
From: Passaic County, NJ
What i can say on this is, i have an exhaust and a big sucker ac. So i bought the tts mastertune tuner. After setting up a programmed calibration from there list that has the mods i have, it still shows the afr will be 14.6. Thats exatly what it would be if i didnt have the tuner.
So, this leads me to believe you are not using the Mastertune for what it was intended.
Last edited by SC-Longhair; 08-13-2011 at 12:44 PM.
#29
08-13-2011 | 01:42 PM
Ultimate HDF Member
Joined: Jul 2011
Posts: 5,477
Likes: 4
From: New Braunfels, Texas
Longhair has it right, XEID's are not bypassing the 02 sensors. I have XEID's, rush slip ons with 2.25 baffles and an open big sucker filter and the bike runs great at idle, crusing, and full throttle. Yes they only work in the closed loop position, but thats is 99% of where you ride at. XEID's might not be for everybody but for someone that wants to keep it simple...they work
#30
08-13-2011 | 04:42 PM
Road Warrior
Joined: Aug 2009
Posts: 1,630
Likes: 17
From: Central FL
From what I understand about xied, they are plugged inline with the o2 sensors and in basic terms is a resistor to adjust the voltage being read from them. There is no bypassing of the o2 sensor. So, the o2 sensor is still being used but the data it sends back to the ECU is altered.