Ok first of all my new glass pack sounds great and the problem i have been experencing has being doing it before i installed my glasspack. Soo here's what happens to my '98 durango 5.2 and the problem starts everytime i start it up and it acts up after i go down the road alittle ways, the problem is it looses power and it stutters even when i give her some gas but it kinda doesnt do it when i floor it, then it kicks back to normal, soo idk what it could be ??? Injectors dirty ? the fuel pump is loud when i put my ear up to the gas tank soo i'm guessing that's working fine, i havent done a fuel pressure test yet but idk could it be plugs?? I just don't know, it only does it when i first start it up and go down the road alittle ways even if i just shut it off for 10 minutes and sometimes it doesn't even do it. It doesn't have a CEL eaither. soo i'm ?????