multiple O2 sensors.

[classic-indy]

I'm currently getting ready to start an EFI project on a snowmobile. The vehicle I'm thinking of using comes with dual exhaust it possible to run a wideband O2 sensor in each exhaust with microsquirt? I've done a quick search of the forum and couldn't come up with anything.

Thanks,

[grippo]

Yes the spare ADCs 6 and 7 (pins 29 and 5 on Ampseal) have multiple uses as follows:

// - AN6 is Spare or BARO (BaroOption =2) or EGO2 (EgoOption = 2 or 4)
// or MAF (MAFOption >= 2, MAFPin = 1).
// - AN7 is Spare or KNOCK or MAF (MAFOption >= 2, MAFPin = 2) or
// EGO2 (EgoOption = 5 or 6).

So you can put the second O2 sensor on pin 29 or pin 5, unless you are using something else on either of those pins.

[classic-indy]

I was toying with the idea of using a MAF if I do this I limit myself to a single o2 sensor correct? The muffler collect into a single silencer could I mount the o2 sensor in there or is that too far away from the engine?

[nismoryco]

You should still be able to use both. EGO2 could be on ADC6 and MAF would be on ADC7.