Go to the device info screen. If it was originally made as an dpf equipped 6.4, it will say OR after tune version. ( Should be right above where it says unlocks left 4 or 5 usually ) That being said, Sct used to back in the day take regular 9625 for dpf equipped trucks and for a fee, convert them over to dpf deleted tuners making them an OR but the serial or tuner version numbers didn't change so only way to check that is call Sct when open and give them the serial number and they can see in their database if it was ever converted to from a regular dpf 9625 to a 9625 dpf deleted version. And extreme version just means it has an extra preloaded tune in it, the extreme high powered version, they did that for both regular 9625 and 9625 OR versions.