Elevated Idle on Deceleration
 

I have a 2007 6.0 that I currently installed 155/30 Warren injectors. I have the Powermax s1 and the sct x4. Got the custom tunes from GH also. The problem I’m having is that the truck stays at 1000rpm when decelerating to come to a stop. Not sure what it is because the truck runs so smooth any other time. Any help would be great.