I am not associated with TTS in any way, but if this discussion helps me to understand this product better, I am sure others will benefit as well.
If like me, you opened up your intake and exhaust and maybe installed some other performance modifications, you now need to recalibrate the ECM in order to get the engine to run the way it's supposed to. There are options, such as modules that are installed to change the signal between the ECM and fuel injectors, but using the MasterTune product you can reprogram the Delphi EFI controller directly.
In the hands of an expert, using the MasterTune and a dynamometer, the performance benefits of the hardware modifications will be maximized, but with some knowledge, reading through this forum and the help files included with the TTS MasterTune product, the user will be able to do their own tune that may be quite satisfactory.
It is recommended that you read through the help files before getting started. What I did not find was a simple step-by-step guide to getting a basic tune. This is my attempt at piecing one together. I welcome your input.
+1. Run TTS Software Updater to ensure the most current software version.
+2. Connect system to diagnostic port on the motorcycle. (The diagnostic connector on my ’09 FLHX is under the left side cover. This is not the only 4 pin connector that fits the TTS cable. Be sure and find the right one.)
+3. Use MasterTune-HD to Save Factory Calibration to a file.
- a. Launch MasterTune-HD
- b. Choose menu item: “File|Save or Restore Factory Calibration”
- c. Get ECM Info
- d. Choose “Command|Save ECM Calibration”
+4. Use MasterTune-HD to select and install the closest starting calibration map from the MasterTune files. (Mine uses the level 205 drive by wire calibration for 1580 engine with Air Cleaner & Race Exhaust. Use the MasterTuneCalFileListing to find yours.)
- a. Launch MasterTune-HD.
- b. Select base Tuning File to be installed.
- c. Choose “File|Program ECM” menu item and install the base tuning file to the ECM.
+5. Start and warm up the engine.
+6. Use DataMaster-HD to record VTune Data
- a. From the “File” menu, choose “Record VTune Data”
- b. Choose filename to write data. (The default is a good choice).
- c. Test the interface (“Get ECM Info.”)
- d. Record the tuning data. Secure the computer and take a short ride. Accelerate slowly and smoothly. Ride up long hills (unless you live in Florida, is there any other place on earth so flat?). Try and ride through full range of throttle and load conditions. Don’t turn off the ignition until you stop the recording.
+7. Use VTune-HD to generate a new calibration map.
- a. Launch VTune-HD
- b. Select the calibration file loaded in the ECM and the VTune data file recorded in the last step and generate Tune. The new calculated EV tables (for front and rear cylinders) will display indicating a range of calculated changes. Choose “Accept” and generate the new calibration file.
+8. Install this new calibration file into the ECM (following step 4 above) using MasterTune-HD, record new VTune Data with DataMaster-HD (step 6), and use VTune-HD to calculate new calibration (Step 7). When the new EV tables are displayed, the displayed changes should be smaller. Install, Record, and Recalculate. TTS recommends at least 3 interations.
At this point, my engine seems to be running pretty well, with no backfiring.
I found this note in the VTune Help file, “After the final iteration, the user must reset all AFR cell to the factory original values. This is required to prevent the vehicle from running too hot due to lean mixture operation.” I’m still sorting this one out, so if someone else wants to jump in here, feel free.
Let me know if this is a good start or not, and what needs to change.