The Mini Maxx comes pre-loaded with canned tunes for both on-road emissions-installed trucks as well as off-road emissions-deleted trucks.To run the emissions-delete tunes you will need to remove the DPF/DEF systems from the exhaust.  The EGR system will be disabled with the delete-tunes and it is optional to remove the EGR system using a full delete kit. The DEF system can be fully removed with the delete-tunes and the sensors can all be unplugged.  We recommend taping up the connectors to save them from corrosion.  The catalytic converter can also be removed when running the delete-tunes.Vehicle specific tips:-2007.5-2009 RAM Cummins 6.7L--If you are not installing an EGR delete kit you will need to unplug everything associated with the EGR system.  There are 3 EGT sensors, one NOx sensor, one pressure sensor, and one DEF urea injector. -2010-2012 RAM Cummins 6.7L--If you are not installing an EGR delete kit you can leave everything related to the EGR system plugged in. -2011-2012 RAM Cummins 6.7 Cab & Chassis--These trucks have a DEF urea injection system that has to be unplugged or you can fully remove the DEF system. Not unplugging (or removing) your urea injection system will result in a dash warning message or Check-Engine-Light-2008-2010 Powerstroke 6.4L--All exhaust sensors will need to be unplugged but the EGR system can be left as is, or fully deleted. -2011-2014 Powerstroke 6.7L--If you are not removing the EGR system you will need to unplug all sensors related to the EGR system in the engine bay or damage to the EGR system will occur. -2015-2016 Powerstroke 6.7L--Some late-production 2015 and 2016 model year Ford trucks will throw a Check-Engine-Light for the crankcase ventilation sensor, this will not cause any drivability issues but will keep the CEL light on your dash. -2007-2010 Duramax--Some Duramax trucks will throw error codes 312 & 316 when installing the Mini Maxx.Error 312: If you get error 312 go into the Menu and scroll down to Show Settings and enter that submenu, once on the Show Settings screen hold down the bottom left button for 10-15 seconds until you hear a beep, and a new screen will pop up, enter 0468 into this screen and select "Reset".  After it restarts go directly into the Menu and select "Install Download", do NOT re-select the vehicle before doing this step. Error 316: If you get code 316 this indicated that the Mini Maxx is unable to communicate with the truck's PCM, there can be a few different causes of this.1) The truck had been previously been tuned and that previous tuner locked the PCM.  If this happens you will first need to have the truck flashed back to stock by the dealer before another tune can be installed. 2) Bad HDMI cable, this can easily be tested by using another HDMI cable between the OBD box and tuner to rule out a faulty HDMI cable3) Broken OBD connector/block/harness.  The first thing to do is take a flashlight and shine it into the OBD port looking for any corrosion, bent, or broken pins.  You will need to inspect both sides of the connector, front and back.   If the OBD port checks out, inspect the Mini Maxx OBD block/harness for any damaged, bent, or missing pins.  -2015-2016 DuramaxError 0 missing C1300I.15D - This is a file that was missing on the first batches of Mini Maxx V2 tuners.  If you are having this issue you can email support@tunerdepot.com