I've heard a lot of mixed reviews on this stuff, snake oil etc.
I used it on my old car for it to pass on emissions testing, first time I took it in.. all warmed up etc. and it failed. ran some Redex through it for a tank, took it back, warmed up again and it passed by miles! To me it did the job and I had no problems, the car didn't feel any better for it though.
I'd like somebody to sneak it into my tank one time and see if I can actually notice the difference without knowing its in there, placebo and all that
Glad to hear it had a good result for you though!