MicroSquirt.com read only forum (Jan.15,2018)

After reading through MSextra threads going back to 2012, I did not find anything like what I want to do.

Am I the first to think MicroSquirt is the right hardware for adding aux fuel injectors for direct injected engines and E85 fuel?

Until it is as easy to upgrade DI injectors as it is to ...

Thank you for the advice.

About that firmware, is there a reason why people wouldn't use it since it seems to add features?

To me the hardware is the thing which is why I have asked here.

Evidently my stock ECU uses the MAF sensor only as a way to measure intake air temps so maybe I have a MAF ...

You can use the standard MegaSquirt® EFI Controller to control extra injectors.
You wouldn't need to hook up the coolant temperature sensor, if you didn't want to, you would just set all the temperature dependent values to 100% (warm-up enrichments, cold accel enrich., etc.).
You don't need to hook ...

Some direct injection engines have great horsepower potential but they are let down by injectors or high pressure fuel pumps that can not supply the large volume of high octane E85 needed to realize that potential.

Presently the only practical solution is to add a set of port fuel injectors and ...