alright guys i have some injecters i got and idk if there stock or performance ones haw can i teal that they are

 

mine sounds a bit rougher and if i turn my chip down to 0% power increase and it still blows coal i have 120's and ik they come milder and crazier other then that i am not sure how to tell unless you haven't installed them yet then id say you may be able to check the nozzle width and see if there's a difference..but im not the brightest bulb in the box on injectors so maby someone else can help more good luck id also like to point out im running a 24v not 12v so there may be a difference there too