AriGold, thanks for keeping us updated on your progress! If you would like me to investigate any lingering concerns further, don't hesitate to contact me. I'm reachable via email at Katie_Lucille@gmexpert.com.
Cadillac Customer Service
ah ha! PGA2B aka Jaime, I thought I recognized your screen name. Im glad we were able to get both cats done for you. hopefully all is well with the car now.
As far as headers w/ cats, we made a few runs with cats intergrated into the headers when I was at D3...might want to see if they are still doing them. If i remember correctly, they are a direct fit replacement.
Yep you got me! Its running great! Had a little tuning to do and shes running like a top now and my idle issue is gone. I figured it was related to the cats and now I am sure of it.