I had taken my last poppy pod dose about 24 hours prior to sniffing 4mgs of suboxone. Because pods stay in your system for so long, I got VERY sick. it was one of the most intense drug experiences of my life (the anxiety and discomfort was right up there with a salvia trip). I was dripping sweat, everything hurt (the fillings in my teeth f'n hurt) and I was nearly hallucinating. It was more intense than any IV heroin withdrawal I'd ever experienced....Sure it only lasted about 15-30 minutes but it was a very awful 30 minutes.
The bupe will eventually
out compete the naloxone but not until after being VERY dopesick for 15-30 minutes. I'm just saying this to clear up misinformation, it's not pertinent to the OP because he said he already took 8mgs and didn't mention any precipitated withdrawal.