EGT & Multiplexing

[Breastfed]

Hi Jean
I have v3 MS2extra and the 4ch sequential ign inj driver installed with single tach input, I was having thoughts about a 4ch EGT to Trim each injector, so anyway the idea is about using the AD595 and multiplexing this to a single adc port instead of multiple ports that could be free for other use's.

any thoughts ?

Breastfed

[jbelanger]

To do multiplexing, you'd have to have the ECU control the multiplexer and that would take 2 outputs to select one of the 4 EGT channels. So you'd use 3 ECU pins instead of 4 which is not a big enough saving for the added code complexity. Moreover, you'd have to have those 2 outputs available which is not a given.

The solution is a CAN device which uses no additional I/O on the ECU.

Jean

[Breastfed]

Thanks Jean
I've been reading all the info on the IOX after I posted ...sure solves a lot of problems well done

Breastfed