2011 - 2016 LML Duramax 2500 3500 4500 5500 | EFI Live Select Physical Switch:ADD Duramax 2011 - 2016 DSP5 Switch | $80 11 a/b/g/n (up to 150Mbps)

11 a/b/g/n (up to 150Mbps) (available with a future firmware update)

it is HIGHLY recommended to deploy with a CSP4/CSP5 OBDII Passthrough Switch for ease of Tune selection

Power Levels:

Knurled aluminum switch knob and position dial

Whether you need heavy tow power

2011 - 2016 LML Duramax 2500 3500 4500 5500 | EFI Live Select Physical Switch:ADD Duramax 2011 - 2016 DSP5 Switch | $80 11 a/b/g/n (up to 150Mbps)**If you purchased an EFI LIVE License ONLY for $125, you are confirming that you already have a flash device (AutoCal or FlashScan). If you do not know what either of those are you need to select the AutoCal Device + EFI Live License option to flash your truck. Unlock the full potential of your Duramax engine with our advanced tuning technology, offering a range of benefits to optimize your truck's performance. Experience an increase in mileage,