openinverter forum

Hello.
I was wondering what parameters can be adjusted to improve efficiency of the SDU and maybe squeeze more range out of the vehicle. Is it only throtramp?

I have SDU on the VW T2 - heavy vehicle with high drag coefficient - so 0...60s isn't my primary interest, range - is. I do still want to be able to ramp onto highway though, so acceleration should remain reasonable.
Attached is my current parameters set. I turned off offthrotregen for testing.

P.S. I'm still looking to find the current mile per "electron" for comparison.

Thanks in advance.

alexbeatle wrote: ↑Fri Aug 15, 2025 4:39 pm P.S. I'm still looking to find the current mile per "electron" for comparison.

Best way that I've done this is charge to 100%, drive a route that is the type of driving you're most often going to do (city, highway, mixed, etc) ideally out and back on the same route, and then recharge on the same charger to 100%, noting the kWh gained on that charge. Take the distance, divide by the energy used, and you have mi/kWh.

alexbeatle wrote: ↑Fri Aug 15, 2025 4:39 pm I was wondering what parameters can be adjusted to improve efficiency of the SDU and maybe squeeze more range out of the vehicle. Is it only throtramp?

Changing throtramp isn't really changing the efficiency as much as how the throttle responds to your foot. Which, I suppose can have an impact depending on how you personally drive, but its more just cleaning up your input than it is really changing efficiency of the drive unit.

What I have found created the biggest impact on my range were improvements to the vehicle itself. Running the tires at the top of the acceptable pressure range was a noticeable change in range, for example.