We've just finished testing V29 software and this will be shipping in new ECUs starting next week.
Highlights of improvements and new features over V26-V28:
1. New LOP function tied to ignition advance switch. This can be configured to either just advance timing a programmable amount at the flick of a switch after manually leaning or simultaneously advancing timing and leaning a programmable percentage. There is a hard MAP limit imposed to negate both functions above about 75% power for some protection against forgetting the switch positions near WOT and low altitudes.
Leaning with ignition advance
Window to set the percentage to lean- up to 65%
2. Select Gauge 1 or Gauge 4 toggling from programming location. You can now select the default Gauge mode to return to when programming parameters, either Gauge 1 or Gauge 4. This will be much more convenient for programming fuel parameters where AFR information is required.
3. Cranking enrichment has been upgraded from a max 32mS pulse to 64mS, effectively doubling the possible amount of fuel for cold starting in extremely low temperatures (below -25C). Still programmed at each temperature set point but now effective to values exceeding 220.
4. Automatic barometric compensation with altitude, regardless of MAP. Flight testing by Dave Anders uncovered the need to correct for this variable when flying in the oxygen levels. New ECUs contain a baro sensor in addition to the external MAP sensor.
5. Selectable blending of IAT and ET (CHT) sensors. These no longer need to be used as pre-set pairs. Selectable in setup mode along with C of F units.
In case anyone missed it, we now have individual cylinder fuel trim for 6 cylinder engines as well.
We're about out of ideas for the moment on how to improve the system much more until unleaded avgas comes to be.
Thanks to all of our customers and testers for the feedback and ideas which made V29 possible.
Highlights of improvements and new features over V26-V28:
1. New LOP function tied to ignition advance switch. This can be configured to either just advance timing a programmable amount at the flick of a switch after manually leaning or simultaneously advancing timing and leaning a programmable percentage. There is a hard MAP limit imposed to negate both functions above about 75% power for some protection against forgetting the switch positions near WOT and low altitudes.
Leaning with ignition advance
Window to set the percentage to lean- up to 65%
2. Select Gauge 1 or Gauge 4 toggling from programming location. You can now select the default Gauge mode to return to when programming parameters, either Gauge 1 or Gauge 4. This will be much more convenient for programming fuel parameters where AFR information is required.
3. Cranking enrichment has been upgraded from a max 32mS pulse to 64mS, effectively doubling the possible amount of fuel for cold starting in extremely low temperatures (below -25C). Still programmed at each temperature set point but now effective to values exceeding 220.
4. Automatic barometric compensation with altitude, regardless of MAP. Flight testing by Dave Anders uncovered the need to correct for this variable when flying in the oxygen levels. New ECUs contain a baro sensor in addition to the external MAP sensor.
5. Selectable blending of IAT and ET (CHT) sensors. These no longer need to be used as pre-set pairs. Selectable in setup mode along with C of F units.
In case anyone missed it, we now have individual cylinder fuel trim for 6 cylinder engines as well.
We're about out of ideas for the moment on how to improve the system much more until unleaded avgas comes to be.
Thanks to all of our customers and testers for the feedback and ideas which made V29 possible.
