Just like the tittle says, im finishing up putting my motor back together, and noticed i didnt have these installed with the primary injectors. Is it going t harm my proformance if i didnt use em or do i need to find some

 

It is suggested to keep them in the primary spot. From what i've seen posted the idle will suffer without them.

 

Doesnt this cause flooding as well?

 

Leaking injectors would cause the flooding, not lack of the difusers.

 

the diffuser plate and the charge line to the LIM are key in smooth idle tuning

 

Thats right, got the two mixed up.