2011 - 2016 LML Emissions Delete + Performance tune with AutoCal

Reduce unnecessary weight on you 2011-2016 LML Duramax, add some power and increase fuel mileage 

Flash this custom build tune into your vehicle using the provided brand new Autocal device.

 At checkout please provide vehicle VIN so a proper file can be build 

 Please select below if you are running a stock CP4 or upgraded to a CP3