I just read all 22 pages including all the links and now that my eyes are burning I wanted to take the time to thank everybody that gave productive input pro/con. This thread was one thing but the links really sold me or unsold me on Dyno-flow. I will pay the local shop extra to have it done.
I really got screwed on a car I bought off of ebay from a private party and really think that this post may have helped save me those same headaches. Thank GOD sights like this have Scammer watch lists.
Ryan