tuning with sert
I have a stock 96" with SE air cleaner and rinehart true duals. It ran OK but didn't seem to be very smooth and had some decel popping. Since the 2007 has O2 sensors, there is a way to use them to your advantage to tune the bike. Find the closest base map that matches your set up and open the air fuel ratio table. All the cells that are 14.6 are the ones that the computer will adjust with the O2 sensors. You can change most of the other cells to 14.5. This allows the computer to adjust them also. Now load the map. hook up your laptop and set up to record engine data with O2 info. Ride the bike while recording. I have found that about 10-15 minutes at a time with various throttle and load situations will suffice. Go home and "read" the data that was recorded. You can set up a graph to see 4 different parameters. I choose the engine speed, throttle %, new front (or rear)VE, and front (or rear) VE. You can see what the ecm is calling for (front or rear VE) and what the O2 sensors have adjusted to meet the AFR (new front or rear VE). Then you have to open the front or rear VE tables one at a time and adjust the cells to the new VE numbers. I don't recommend using any deceleration numbers for adjustment. Use only steady throttle or acceleration for best results. When adjustments have been made you can save the map and load into the bike and repeat a couple of times until you feel that everything is good enough. Then take the final adjusted map and set the AFRs back to the original numbers in the first map, save and load into the bike. If everything was done right it will run way smoother than before and get a little better milage. Also after the final map is loaded you can make a recording run and check to see if there is any knock retard happening. If it is just retard timing in the cell that is affected and save, then load. It sounds like a lot of work but I spent only about 3 hours and have a way better running bike and did not have to spend any money on a dyno tune.
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For those with the 2007 and a SERT there is a lot of tuning that can be done with out a dyno if smooth running is what your after. I have a stock 96" with SE air cleaner and rinehart true duals. It ran OK but didn't seem to be very smooth and had some decel popping.
Since the 2007 has O2 sensors, there is a way to use them to your advantage to tune the bike. Find the closest base map that matches your set up and open the air fuel ratio table. All the cells that are 14.6 are the ones that the computer will adjust with the O2 sensors. You can change most of the other cells to 14.5. This allows the computer to adjust them also. Now load the map. hook up your laptop and set up to record engine data with O2 info. Ride the bike while recording. I have found that about 10-15 minutes at a time with various throttle and load situations will suffice.
Go home and "read" the data that was recorded. You can set up a graph to see 4 different parameters. I choose the engine speed, throttle %, new front (or rear)VE, and front (or rear) VE. You can see what the ecm is calling for (front or rear VE) and what the O2 sensors have adjusted to meet the AFR (new front or rear VE). Then you have to open the front or rear VE tables one at a time and adjust the cells to the new VE numbers. I don't recommend using any deceleration numbers for adjustment. Use only steady throttle or acceleration for best results.
When adjustments have been made you can save the map and load into the bike and repeat a couple of times until you feel that everything is good enough. Then take the final adjusted map and set the AFRs back to the original numbers in the first map, save and load into the bike. If everything was done right it will run way smoother than before and get a little better milage.
Also after the final map is loaded you can make a recording run and check to see if there is any knock retard happening. If it is just retard timing in the cell that is affected and save, then load. It sounds like a lot of work but I spent only about 3 hours and have a way better running bike and did not have to spend any money on a dyno tune.




