G4X Lambda Queries

[slimjim]

Hi there

I'm just trying to figure out what input and outputs I need before purchasing an ECU for a classic car, which will end up turbocharged.

Most probably going for a StormX at this stage to keep a lot of options open for the ECU to control for various cooling fans and auxiliary cooling pumps etc 

Makes sense to me for everything to be controlled from one place as opposed to a number external controllers that need to be mounted and usually end up going bad anyway.

Question about the CAN Lambda.. as my engine has two banks of cylinders, I would like to keep an eye on the two banks individually from a lambda perspective.

Would I be correct in understanding that if i was to run a dual CAN wideband like the Haltech WB2, it would still only take one input channel into the ECU, or would it be two of the eight? and being CAN, would that be of the digital inputs, or analogue?

 

An old brain trying to learn the new ropes

Regards, and best

Slim

[Vaughan]

CAN widebands will be connected through the CAN input which on the storm is pins 27&28 on the B plug. You can have multiple devices connected to the same CAN bus as long as they are all set to talk on the same CAN Bus speed. CAN Widebands do not use any analogs, wideband controllers that send the lambda value out as a voltage instead of out over CAN would use an analog. CAN is much better than using voltage signals for Lambda as it has a wider range of possible values and isn't affected by electrical noise or ground offsets like voltage signals can be.

[slimjim]

Thanks Vaughan, 

One further question - The StormX having 8 injector drives and 8 ignition drives..  

If i was running a V4 engine configuration with sequential injection and spark, would that give me an additional 8 AN outputs - totaling 16 AN outputs? 

And lastly, the StormX having 2 knock channels, 1 per bank on my engine, am I correct in thinking that would take 2 of the 8 AN inputs?   

Regards, and best

[Vaughan]

It would give you 8 additional Aux outputs yes.

The Link terminology is DI for Digital inputs (switched on/off and frequency signals), An Volt for voltage inputs (pressure sensors etc), An Temp for voltage inputs with a pullup to 5V (temperature sensors), Aux for outputs and we use Aux Inj and Aux Ign on our plugin diagrams for Inj and Ign pins not being used for Injection or Ignition. The Ignition and injection pins don't have weak 12V pullups on them when being used as general outputs like the Aux outputs do and they won't backfeed power into the ECU so if you have to switch something that still has power to it when the ECU is off use a spare injection or ignition output for that.