is it bad if my injector is missing this?
 

ok so i pulled my 1300s injectors i had put in the car from pettit, since i never done it before,

skip to now, i wanted to send all the injectors to get tested and cleaned..

i found that 1 of my injectors was missing the black piece that seems like a filter, as you can see in this picture as a reference.. is it bad that one of the injectors didnt have it?

http://www.atsracing.net/DSC00999.JPG

is it the thing that goes on the tip that you're talking about? if so, shouldn't be a problem. RC Engineering replaced mine when I had mine worked over.

no the black piece above that.. where it looks like it has that rust color mesh in this picture. that black piece

I'd say your injector is probably alright but whoever messed with it last is an idiot for not putting it on/replacing it. The pintle of an injector is EXTREMELY small and can clog very easily. That mesh filter is the last line of defense against this. I would suggest getting them cleaned/tested and have that part replaced when you do.

here just to clarify and make sure you all understand what im talking about

http://img689.imageshack.us/img689/7256/dsc00999tw.jpg