Ever since I got my truck (2008 C&C 5500) it has done this weird thing. Whenever the RPMS hit 900 while decelerating, the truck blips the throttle by itself like you mash the pedal. No idea why it does it. It happened before it was tuned and deleted, and it is still doing it after. It is noticeable at any speed when decelerating, but it is most noticeable when maneuvering in a parking lot or trying to hook up a trailer...super inconvenient. Has anyone else had a similar issue? I have watched the throttle position sensor PID wen it does it, and it isn't related to the TPS since the TPS still reads 0% when it happens. The truck has been deleted and the EGR and throttle valve unplugged. I have the delete kit for it but haven't had time to put it on yet. Thanks in advance for the information!