ok... finally got the title for the truck and went to go get it changed over. The truck starts up and idles great. I get to the main road and it has no power and tries to die when i give it gas, so i turn around and have to limp home at about 5mph anything over and it wants to cut out. I drove it today because I got off of work early and it runs until it gets warm and then does the same thing. I cut the cat off and drive it to my friends house(about 2 miles) and it runs great again. On the way home it runs great then starts the same thing but I can go about 45.....I need help