By Lance Lucas
In general, the Realtime tuning procedure is as such:
- Generate your "base map" prior to starting the tune. This can be stock, OTS or whatever custom you'd like. Save this as something that will be unique for this customer. I use a name and version indicator as a way to track my work, IE, "Lance Lucas - Wastegate Only Boost v001".
- Reflash this map to the car. You can do this directly from the software via pass-through flash (Shift-Ctrl-F) or from the handheld itself.
- Start the car up (or at least power on to RUN). Double-check that this map is still the one you have opened in the software. You can now Live Connect to the ECU via Ctrl-L or "ECU" -> "Connect to ECU". Any time you Live Connect to the ECU, the realtime table data will be PULLED from the ECU to the software.
- This table data should look identical to the data you reflashed as we have not made any changes yet. Click through a couple tables to be sure. We should now have a Green icon in the bottom right corner of the software.
- Tune the car. Any of the Realtime tables can now be adjusted Live - changes will be PUSHED to the ECU. Some newer vehicles and SD ECUs do NOT have the axis values in realtime. Watch out for the label next to the axis name. "Reflash-only" will mean that changes to the data won't be pushed to the ECU.
- You can continue in realtime without reflashing for as long you don't need to make any changes to Base (non-realtime) tables or to the aforementioned axis values that are Reflash-only. For some vehicles that don't require radical changes beyond what I made to my base map, I am able to essentially complete the entire tune without ever reflashing.
- When you do need to make a Base/Reflash-only table, perform a save (Ctrl-Alt-S) with something like "Lance Lucas - Wastegate Only Boost v002", disconnect from the ECU (Ctrl-Alt-L) and then pass-through flash the ECU (Shift-Ctrl-F).
- Jump back to #3 - rinse and repeat!
Things to take note of:
- In rare circumstances, after a crash or communications issue, the software will default back to the stock ECU data rather than your current custom map. ALWAYS ensure you have the correct "base" map loaded before connecting in real time, otherwise you will have a map with your correct realtime table data but bad base table (and a headache from trying to figure out why the car now runs weird).
- The indicator in the bottom right will tell you the status of connectivity. Green means you are connected in Realtime; Orange means you are monitoring or datalogging but NOT connected in Realtime; Red means that changes are being pushed to the ECU while Realtime tuning. If the indicator is Red, wait for those changes to finish being sent to the ECU before making more changes.
- While Live Connected, you can always use Refresh (F5) to re-pull that particular table from the ECU to the software. There should not ever be a reason to need to do this, but it can help you sanity check that the data on the ECU matches what you expect.