Hi does anyone know the injector size and flow rate for a 2002 Mazda 626 2.0 or maybe where I can get some that flow more than the factory ones thank you in advance

 

There are countless F/I retailers. But unless you do a ECU adjustment specifically for the larger fuel injectors (scaling) you are only going to run rich at idle and city driving make your tail pipe look black, lose MPG and your low and mid range will suffer. Now if you are *spinning the engine at 7500 for a long period of time you may find some advantage?
*I just threw that in there so my response was not all negative.

While I don/t know the size and flow rate of your model vehicle I suggest if I were contemplating the thought of possibly needed larger injectors having at least one stock injector flowed to get the exact information.