so i had to smog my car a couple weeks ago so i still have the stock h pipe on usually i run a off road x-pipe.. I took the car out on a spirited run for a 15 min freeway trip...got off the freeway and got into a long fast food line, idleing thru it for bout a half hour . when i got back into traffic and hit some lights i noticed smoke billowing out the side of my car more towards the back wheel well. i pull over and check visually so see where the smoke is coming from but now i cant see any without headlights behind me.. i didint see anything so i figured id cruise home an check it out with a flashlight... So i pull into my driveway and let it idle while i get my flashlight .. I dont see any oil hitting my ehuast or any smoking but it smells like somthing is burning. then i flash rite below the first set of cats from the headersand the pipes are glowing hot like a red hot molten from the cats down the pipes like 4 inches.. What do think is up??? thanks ron