Matthew Kennedy

> Also you can try this test branch https://github.com/dron0gus/wideband/tree/underheat-issue . Issue is still in debug, but looks similar to yours. PR?

 based on the 0.3v jump in battery voltage when the heater kicks off, I'm going to blame weak wiring/psu here

try it with the new bin that heats more aggressively

Last I talked with @dron0gus, there was doubt about whether the "vbatt via heater sense" was the correct approach, or whether it was better to simply add a regular battery...

> With new capacitor value heater voltage are not totally insane so somehow this approach seems to be working? Do you have two sensors connected, both running?

> Yes [rusefi/rusefi-hardware#172 (comment)](https://github.com/rusefi/rusefi-hardware/issues/172#issuecomment-1426136539) have a log?

there is still coupling between heater duty and indicated voltage: 

> I believe this is because of long wires to power supply and supply capable of 3A only. That doesn't explain this spot:  When the heater duty jumps up,...

@dron0gus [given that this exists](https://rusefi.com/forum/viewtopic.php?p=47236#p47236), do we care about this PR?

@rusefillc @dron0gus ping