Thanks for the help guys... I will try the cat and see how that works this weekend, then I will clean the injectors, just to do it, its already torn apart.
I still dont really know what it is.
Now, my Dad thinks that the MAF maybe shot?? I dont know, I am kinda lost without a way of knowin where to start, but, a while ago when I used the OBD I scanner, it gave me a lean code... cant remember which one, so maybe its my fuel pump.. is there any way of checkin the pump to see if its good before i replace it?
thanks in advance.