It's outstanding stuff. Works with FI, Carb's, and also in our oil to keep ring lands clean. I noticed that Pep Boys is now selling it.
I'd suggest you use it in a more concentrated form, in other words, add it to 1/2 tank of gas, drive the piss out of it until the tank is almost empty then fill up and add another can. Once that tank is empty then fill and drive it as you normally would.
The majority swear by the product where as the minority swear at the product. Personally, I use it and it has worked fine.
If you also choose to add it to your oil, run the engine for a day or two then drain the oil.