I've used pcmforless twice, no complaints from me. The first tune with some minor bolt-ons was DEAD ON, just an amazing tune. The second tune was with a set of heads, a big cam, etc. We used his tune and it gave us a great baseline to start with for final tweaking with tunercat. Have to make some more changes now, due to a single plane intake being installed, but it still runs decent. I ordered a new computer from him in the past also, so I wouldn't have any down time, just swap and go, he always has extras on hand. For the second tune I had him email the tune overnight to my friend with tunercat, and again, he came through without a hitch.