welduphill7018

Been looking around and talkig to techs seems the vortec 6.0 loves back pressure I was advised to try a dual 3inch to single 3 inch y pipe to try and get a little more back pressure. I am wondering if i am barking up the wrong tree. Could i have my shift points changed instead or a combination of the two? I love magna flows sound and qualityany comments for this would be appreciated

Is there anyone out there that knows more than just sound I am 46 and love magnaflow nice clean rumbleno clacking or glasspack sound I need yo know if i screwed up by putting a universal x body muffler from magna it is dual 3 in dual 3 out

Hey chevy fans i got a problem, I have a 2002 chevy 2500 hd 6.0 4x4 vin U. I got a magnaflow dual 3 in 3 out x body, my truck has no power when climbing, won't go into passing gear until it hits 40 to 45 miles an hour. The soung is great. i am wondering if the back pressure is to much or to little, the truck came with dual 3in. in 3in. out then into single 3.5 out. wtf is this was it for torque? I am lost for words for what has happened can any one help!!!!