I'm a complete noob to the diesel tuning, or actually car tuning in general. So, this question may be stupid to many of you.

I have been playing the the demo version of EFILive tune for Duramax. I noticed EGR can be control by ECM. With that in mind, wouldn't it possible to 'block" EGR by simply command the EGR to be close at all time?


Thanks