I have an Edge Evolution that looks like this:

It is the type where you have to shut the truck off to program the pcm. Well I just wanted to say you told me so and beware to others. The evolution was blowing my main controller fuse. With it unplugged fuse will not blow. I understand that the newer edge devices are different. This is just my experience and I'm not trying to create an Edge products bashing session. Just a warning to those who use it about my experience. Now the good part: I have a dp tuner style programmer on its way

 

Looking forward to hearing how much you like it!

 

i use one of those for my gauges works ok for me

 

Same here, I've never had a bit of trouble with mine. I can see where there could be issues though, having a cable constantly hooked to the OBDII port could lead to problems if you end up with a bad spot in the cable or something.

 

Be thankful that it just blows a fuse.
On the obs they fry the PCM

 

This reads like it was direct wired instead of going through a relay.