Well I finally got some and my i'm sure its doing its job by cleaning the entire fuel system but i really don't feel my car feels faster like some org members said.

Also i head it might give you better gas mileage, i havent' seen that either.

 

you have an 03, probably with not a significant amount of miles. It usually shows a more noticeable change with older and higher mileage cars.

 

can i use bg44k on my car if I have only 12000 miles??

 

At 12K, there shouldn't be much build up yet unless you use nasty gas. I think bg is listed as at recommended uses for every 25K.
I would do it every 25K and you should never feel a difference because you'll never get enough build up to matter.
If you wait to use it till 50K, then you will notice the difference.

 

It's a fuel injection cleaner, so it won't make your any faster. I used it about two weeks ago, and after about a quarter tank of gas, the engine felt better. It's hard to explain, but it felt "lighter" and more responsive. I'm on my next tank of gas now, and the car feels like it always did before using the 44K, but that's still good.

My gas mileage hasn't really changed either, but that's okay since I didn't expect it to. Again, that stuff is only a cleaner, not a miracle in a can.

Peace.