After installing my Fullsac Exhaust System (link: Fullsac-Exhaust-System) I had to decide how I wanted to tune my bike. After much consideration of options, I purchased a Screamin' Eagle Street Performance Tuner (p/n 41000008B) and cable (p/n 41000018). You can learn all about it here: Training
This is a much more capable system that rumored on the internet. The online training I linked above is great and easy to understand.
Here you can see the number of the tuning file I used and the air-fuel ratio table that controls the engine. The closed-loop region of the table is in bold font. This table can not be edited. That's what makes this the "street" tuner. You must run this approved table.
You can see it goes to 12.8 Air-Fuel Ratio (AFR) at high rpm and high Manifold Air Pressure (MAP). This is when you are opening the throttle for power and 12.8 AFR is perfect for maximum power in gasoline engines. During closed-loop cruising you get clean burning and great fuel economy.
Now here's the good part: You can edit the Volumetric Efficiency (VE) and Spark Advance tables for each cylinder, and, you can ride with the small Vehicle Computer Interface (VCI) connected and record performance data. New tuning updates are automatically calculated (Smart Tune) from the data recording using the laptop computer software and then flashed into the Engine Control Module (ECM) through the VCI. It simply plugs in behind the left side cover.
You can also manually adjust Throttle Progressivity to your liking and adjust the Spark Advance based on head temperature if needed to reduce spark knock at high temperatures.
So far I just loaded the recommended Stage 1 base tuning file. I selected the option to reset the adaptive fuel trims which erases learned adjustments from previous engine operation. Then I went for a ride. The bike ran perfectly, no decel popping or any other "bad" behavior. Throttle response, driveability, and power is excellent as far as I can tell.
I'll post some more in a few weeks after I record some road load data and "Smart Tune" a few times.
This is a much more capable system that rumored on the internet. The online training I linked above is great and easy to understand.
Here you can see the number of the tuning file I used and the air-fuel ratio table that controls the engine. The closed-loop region of the table is in bold font. This table can not be edited. That's what makes this the "street" tuner. You must run this approved table.
You can see it goes to 12.8 Air-Fuel Ratio (AFR) at high rpm and high Manifold Air Pressure (MAP). This is when you are opening the throttle for power and 12.8 AFR is perfect for maximum power in gasoline engines. During closed-loop cruising you get clean burning and great fuel economy.
Now here's the good part: You can edit the Volumetric Efficiency (VE) and Spark Advance tables for each cylinder, and, you can ride with the small Vehicle Computer Interface (VCI) connected and record performance data. New tuning updates are automatically calculated (Smart Tune) from the data recording using the laptop computer software and then flashed into the Engine Control Module (ECM) through the VCI. It simply plugs in behind the left side cover.
You can also manually adjust Throttle Progressivity to your liking and adjust the Spark Advance based on head temperature if needed to reduce spark knock at high temperatures.
So far I just loaded the recommended Stage 1 base tuning file. I selected the option to reset the adaptive fuel trims which erases learned adjustments from previous engine operation. Then I went for a ride. The bike ran perfectly, no decel popping or any other "bad" behavior. Throttle response, driveability, and power is excellent as far as I can tell.
I'll post some more in a few weeks after I record some road load data and "Smart Tune" a few times.
