Considering the 07's LEAN condition
Cruiser
Joined: Jan 2006
Posts: 102
Likes: 0
RE: Considering the 07's LEAN condition
I just happened to note that for the Power Commander with wide band 02 sensor I got for my 1150rt bmw, the afr is set for 13.8:1. So, I'm still guessing that 14.2:1, which seems to be the low end of what a SERT can get to, may still not be optimum, although certainly better than 14.7:1.
Cruiser
Joined: Jan 2006
Posts: 102
Likes: 0
RE: Considering the 07's LEAN condition
Just came across this on a tuner/shop site. I think I've read this before:
"For maximum power, the proper air/fuel ratio for normal engine operation is between 13:1 and 14:1. This is slightly rich and is not the "stoichiometric" ratio 14.7:1 (ideal chemical mix). The "ideal chemical mix" does not produce max power in most engines."
"For maximum power, the proper air/fuel ratio for normal engine operation is between 13:1 and 14:1. This is slightly rich and is not the "stoichiometric" ratio 14.7:1 (ideal chemical mix). The "ideal chemical mix" does not produce max power in most engines."
6th Gear
Joined: Sep 2006
Posts: 11
Likes: 0
RE: Considering the 07's LEAN condition
You may be right about the SERT being better but it also changes the factory ECM, leaving evidence. California dealers are all paranoid, about huge fines, for working on altered bikes, not meeting the EPA specs. They consider the SERT to be illegal for street use. It seems, dealers in other states, are not so worried. Seems to be a bit of a "grey" area. I'm staying with the PC until the warranty is up & then maybe go to the Terry system. They will have a "plug & play" like PC in December.
Road Master
Joined: Oct 2006
Posts: 894
Likes: 1
From: Northport, AL
RE: Considering the 07's LEAN condition
ORIGINAL: Redhead1
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.
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.
David
Road Master
Joined: Dec 2005
Posts: 1,224
Likes: 2
From:
RE: Considering the 07's LEAN condition
Sert is the only way to go with the closed loop bikes. Make that closed loop operation work for you instead of disabling it or working around it all together. The info is out there, the fix is out there; this nut was cracked 8 months ago.
Banned
Joined: Jul 2006
Posts: 866
Likes: 1
From:
RE: Considering the 07's LEAN condition
ORIGINAL: aal
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.
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.
Ideal AFR depends on what the bike is doing. Power requires more fuel, cruise and no load require less
People with the SERT are not getting good results because many times the people taking their money don't know what they are doing, or they buy the product and think they can build a combination and "tune" it themselves by riding and playing ionthe tables.
Intermediate
Joined: Feb 2006
Posts: 43
Likes: 0
RE: Considering the 07's LEAN condition
Could you please explain the 'learn feature' you claim the SERT has? I understand the purpose of the CBL tables and how one can use them to richen up cruise fuel, but the learning feature in the mid 90' design Delphi puzzles me.
Intermediate
Joined: Sep 2006
Posts: 42
Likes: 0
From:
O7 Ultra Map
Does anyone have a PCIII map for an 07 Ultra with a SE air cleaner but stock exhaust
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Stage I
Joined: Dec 2006
Posts: 1
Likes: 0
RE: Considering the 07's LEAN condition
I have an 07 Heritage and am having a S/E AC, S/E Staggered Slip Ons and a SERT installed. The dealer tells me they will dyno the bike for AFR 13.8 in the open loop (throttle roll on). However, they say that in the closed loop (cruising mode) the ECM takes over with the 02 sensors and the best I can get with the SERT is 14.6 AFR unless they turn off the 02 sensors. They are recommending "NOT" turning off the 02 sensors. I don't trust my dealer.
Any ideas on what I should do?
My concern is that it will still be too lean and run hot. I do lots of long distance trips.
Any ideas on what I should do?
My concern is that it will still be too lean and run hot. I do lots of long distance trips.
Cruiser
Joined: Aug 2006
Posts: 176
Likes: 1
RE: Considering the 07's LEAN condition
I installed TFI/DFO #FI-1440ST on my 07 standard. It does just I need it to do. It richens up what gets to the cylinder. I have a set of 04 SE "off road" slip-ons installed.. gotta sound good
. The TFI/DFO easy to install... easy to set like you want it. No dyno, no maps.. etc. To each his own, but I've always had good luck & a nice runnin' scooter w/ the TFI/DFO set up. YMMV....
. The TFI/DFO easy to install... easy to set like you want it. No dyno, no maps.. etc. To each his own, but I've always had good luck & a nice runnin' scooter w/ the TFI/DFO set up. YMMV....