Misc output switched by battery voltage
I would like at least one of the misc outputs to be switched based on battery voltage.
Hysteresis (like the fan and water pump controllers have) on all parameters would be nice, but is very much not essential.
This will enable "smart" alternator control - ie the field in the alternator can be switched off at high TPS and MAT as long as the battery voltage remains above a threshold.
PWM type output for controlling evaporative emissions (carbon can) solenoid
This is discussed elsewhere on my pages [need to add link], and would allow the standard emissions control and tank vents to remain in the car.
Some changes to improve knock control
Will be discussed at much greater length when I am not at work!
1. Create table of knock reading to table (RPM vs MAP) of average knock readings from the last n seconds. (Probably easiest if this is a fading memory smoothing algorithm)
2. Use m*table_values as threshold for declaring knock
3. Retard timing as appropriate
4. Record table (again RPM vs MAP) of [average or max - not sure!] knock retard so that this can be used next time knock occurs, or simply as a tuning aid.
Dual WBO2 sensors
This page is concerned with the firmware mods required to enable dual wideband lambdas for those of us with v8 engines with 2 cats. With a bit of luck, it'll end up simply as a couple of links to firmware pages...
Just got to wait until after Christmas for my Genboard before I can really play... House DIY has to come first :-(
As far as I know, this is not going to happen in the sort term due to lack of PWM outputs. And my car seems happy with just the one sensor, so I'll probably just use a Round AFR meter to monitor the other bank.
There's a spare A to D input into the VEMS - can we use this and a Round AFR meter to have the second channel without a lot of the hardware problems?
Any update on this Dave, im looking to simply log the second wideband channel for the moment, not after control at this stage, just data from the second channel.
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