my truck does that same thing (not only on a cold start, could be hot as well) and I found out my crankshaft pullies shot so it's ripping up the belt everytime it starts (sounds terrible lol) and the cone in the cat dropped. So it's quite a tune <img src="/forums/images/graemlins/scared.gif" alt="" />


2000 Audi TT 1.8Turbo Quattro
1988 Chevy Camaro - 100% Built + for sale!