I got my gun today and gave it a shot on my '06 Civic and came away somewhat impressed I guess. It came with 3 valves used for different water pressures and I guess they could be used for altering the amount of foam, but none worked for me. I yanked the valve out and it worked much better. I used maybe 2oz. of P21S for the 48oz. reservoir and it was plenty to cover the whole car. I'm not sure how thick the foam is supposed to be but it stayed on fairly well I guess. The little slip of paper that came with it listed 11 more tips not listed on the web site. I might give those a shot to see if the foam can be fine tuned. I might try a different soap too to see if it changes anything. I was going to post pics from gallery but couldn't figure it out. You can go there to see the pics if you'd like. If someone can show me how, I'll post them here as well.