Tuner missing from Used F250
Hey guys, new to the Forums here just wanted to say hey first.
I recently bought a used 08 F250 SD 6.4L King Ranch. I'm new to diesels but i'm learning quickly. Anywho, it just started throwing a code for the engine temp not running at correct level. It's around 30 degrees here in the mornings now and i can start the truck and let it run for around 15 mins and the engine temp does not move. Only moves slightly on long drives. Which i was told meant to change the thermostats. Lead me to believe that one is stuck open, does that sound about right?
That being said it has had a DPF and EGR Delete done to it, but did not come with a tuner. From talking to friends they think it only has a delete tune on it cause of it not producing from what im told anymore power than stock. Sorry about the blabbering but my question is how should i go about getting another tuner? In the glove box it had a Disc that has the SCT logo on it. Is it possible to get the SCT tuner offline and it work for what i need? Someone mentioned to me that to be able to tune it i need to have the stock tune which would be on the tuner that tuned the truck in the first place. True? Anyway, just looking for a little advise on what to do. I appreciate all the help i can get. Again, Thanks.