Considering the 07's LEAN condition
Tourer
Joined: Jul 2006
Posts: 435
Likes: 6
From: south jersey
RE: Considering the 07's LEAN condition
ORIGINAL: Chiledog
Is it true the PC-III for 2007s won't change the rev-limit? The data I have seen is unclear on that.
Is it true the PC-III for 2007s won't change the rev-limit? The data I have seen is unclear on that.
I was told that you can enable the Rev-Xtend and raise the limit to 6200 rpm. If you read the description in this link, it gives you the info.
http://cgi.ebay.com/ebaymotors/2007-...2124QQtcZphoto
Advanced
Joined: May 2006
Posts: 60
Likes: 0
From:
RE: Considering the 07's LEAN condition
I was looking at the DFO/TFI at dobeckperformance the other day and they have one for the 07's. Looking at the installation for the 06 Dyna version, it appeared that it plugged in to the O2 sensors as well as the injectors. I'm assuming that plugging in to the O2 sensors it somehow changes what the O2 sensors are sending to the ECM.
Banned
Joined: Jul 2006
Posts: 866
Likes: 1
From:
RE: Considering the 07's LEAN condition
ORIGINAL: Chiledog
Didn't the PC-III for 2007 models, and the associated 2007 maps, just come out in the last week or 2? Has anyone tried the 2007 PC-III?
It looks like it eliminates the OEM O2 sensors
Didn't the PC-III for 2007 models, and the associated 2007 maps, just come out in the last week or 2? Has anyone tried the 2007 PC-III?
It looks like it eliminates the OEM O2 sensors
Road Master
Joined: Aug 2006
Posts: 830
Likes: 94
From: Fuquay-Varina, NC
RE: Considering the 07's LEAN condition
I just installed a PCIII with O2 eliminators on my '07 Ultra along with Vance and Hines Oval Slip On's and an Arlen Ness Big Sucker Stage 1. I have not taken it for a ride yet due to the time (1am) and rain in the area.
I will take a quote from Fuel Moto on the O2 issue:
"A note about the Harley OEM O2 sensors. Contrary to popular opinion and belief the factory O2 sensors are NOT a performance enhancing device. They are nothing more than a analog sensor which upon certain cruise areas (below 3500 rpm's/40% throttle ) allows the ECM to go into closed loop and leads to an overly lean mixture. The causes poor throttle response, excessive engine temps and poor performance.. These are not wideband sensors and the HD/Delphi system is in no way an adaptive closed loop system. The O2 sensor eliminators plug into the stock sensor plug and send the ECM a fixed value, preventing the EMC from going into closed loop which allows the EFI to be properly set up."
Jamie at Fuel Moto is not the first "tech" to say the exact same thing about the O2 sensors and '07 models.
I will take a quote from Fuel Moto on the O2 issue:
"A note about the Harley OEM O2 sensors. Contrary to popular opinion and belief the factory O2 sensors are NOT a performance enhancing device. They are nothing more than a analog sensor which upon certain cruise areas (below 3500 rpm's/40% throttle ) allows the ECM to go into closed loop and leads to an overly lean mixture. The causes poor throttle response, excessive engine temps and poor performance.. These are not wideband sensors and the HD/Delphi system is in no way an adaptive closed loop system. The O2 sensor eliminators plug into the stock sensor plug and send the ECM a fixed value, preventing the EMC from going into closed loop which allows the EFI to be properly set up."
Jamie at Fuel Moto is not the first "tech" to say the exact same thing about the O2 sensors and '07 models.
Tourer
Joined: Dec 2005
Posts: 295
Likes: 2
From: Australia
RE: Considering the 07's LEAN condition
as stated before in another post you can richen up the cosed loop mode on the closed loop bias table with SERT.o2 sensors also help with cold starts.dont see any point in eliminating them.Realy shows that power commander dont really want to harness the technology even in its narrow band limited scope.
Road Master
Joined: Aug 2006
Posts: 830
Likes: 94
From: Fuquay-Varina, NC
RE: Considering the 07's LEAN condition
We all have our preference. I prefer not to spend over $400 on a SERT. I prefer my bike to sound better and a little louder than stock and I prefer my bike to not run too lean. So if my bike will run like a finely tuned 2006 model (without O2 sensors) with a little more HP and TQ thanks to the larger engine then I am good to go.
Banned
Joined: Jul 2006
Posts: 866
Likes: 1
From:
RE: Considering the 07's LEAN condition
Sorry - moto is wrong. They are a narrow band sensor as found in many cars and they are used to control to a bias voltage. you can have them control to 14.2:1 which is a perfect cruise. Also, 07 HAS ADAPTIVE LEARNING. The EFI tuner is the superior product for 07 bikes.
Intermediate
Joined: Aug 2006
Posts: 28
Likes: 0
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Cruiser
Joined: Jan 2006
Posts: 102
Likes: 0
RE: Considering the 07's LEAN condition
I just want to make sure I understand correctly; it is possible to get the closed loop system to operate at 14.2:1? If so, how? I thought it was set for 14.7:1, and there was nothing to do to change this. Also, is it correct that 14.2:1 or so is really the ideal afr? I thought this was still a little lean, and that something in the high 13s was best, performance wise. If the SERT can get the afr down to optimum range, I'd agree that the 02 eliminators wouldn't seem to be advantageous. After reading a lot of posts on this issue, however, I'd have to say that either the SERT can't really get the afr to optimum range, or no one seems to be able to really use the SERT to get the afr into the optimum range. I may be wrong, but I get the understanding that a lot of people with SERT are still not getting optimum results.