Thanks for those before pictures and the instructions. This has been reported on here before, but your pictures are new to me. I have used the sea foam treatment myself just as you described, but had no white or black smoke exhaust after the treatment so I always wondered what good it did. I know Techron Total Fuel System Cleaner is good as it cleared a stuck EGR value on another car I own and the code also cleared on it's own. If you can get some pictures now that the treatment is completed it would be most useful.
Thanks for the write up!