Good day, looking to get a few answers from you tuner pros. I have an '07 Ultra with Andrews 48H cams, k&N style air cleaner, stock headers with V&H Slip ons. After doing the mods I contacted DJ for a custom tune, it ran pretty good on the one they sent. I have since done a few autotune basic sessions and as I reflash each one, the bike is definitely pulling stronger. Was getting more decel pop, but added a bit of fuel/timing in trim settings as per a fuel moto vid I found, that helped. So now my actual question is going forward to the AFR table, I haven't touched it, its still as Dynojet sent. If you look at the pics below should I adjust as they are using lambda of 1 throughout much of it, will that be to lean? And where they have it set to go open loop, is that ok as well? Basically, if anyone thinks this table should be adjusted please let me know, words of wisdom are appreciated.

These VE tables are scaled(displacement of 104.1) as I had numbers higher then 127.5 while autotuning.

 

You can leave it like that when you auto tune it sets the whole thing to 14.7 anyway. Unless you are running a wideband o2 setup. Once you disable the auto tune it goes back to what it is. A target tune would dial those ve tables in and have you as close to a dyno tune as you could possibly get.

 

Ok thanks, but what about setting the table after autotuning? Leave it? Is there something better, should i use something more like 14.3 to keep it a bit rich? I did a 60mile ride today, engine temps averaged 225 to 250F at 65mph in 80degree weather.

 

 

You can fatten the cruise area up a bit and try it out. You can always go back if you don't like it. Here is what I normally use in Lambda.

 

The calibration for your 2007 bike uses an AFR based Fuel Table. 14.6 is the closed loop switch, any other value is open loop and will not use the O2 sensors for fuel control. The ECM refers to the Closed Loop bias tables for the switching voltage for the sensors, you set the approriate closed loop AF target by adjusting these values. We generally set the Closed Loop bias tables to 700mv which is approx 14.3 AFR, we do not recommend setting them any higher than about 720 as the sensors are non-linear and the further you get from 450mv you lose accuracy and fuel control.

 

Ok, Thanks Jamie, I will give that a shot. Did programming change in newer models to allow for changes to lambda in afr tables and still remain closed loop? Like the table in Tireds post just before yours?

 

On newer Lambda based calibrations you still have the same AF range for closed loop, narrowband O2's have an operating range of about 14.3-15.0 AFR (.970-1.02 Lambda). Lambda cals use an absolute value rather than bias tables.