[Ryan from Ohio]

When I did mine I pulled the tube out of the accordion intake deal.

I took one of the long skinny funnels and was able to get the tip of it right @ the TB. I reved it to where it should be, stuffed a screw driver in to pin it @ idle. Poured her in like directed. I wasnt able to stall the engine but damn near.

If you didnt have any white smoke, none was on the valves when you shut it down. Try again.

Also, I would recommends the GM Top End cleaner over the seafoam. It seems to make a bigger smoke show and smell worse, so it leads me to think its doing a better job.