3.4 miss fire at idle

[montessgtp]

Well in the last month ive replaced a bunch of stuff on 3.4. I bought a use rsm ported TB n replace my injectors with ones from Witchhunter performance...now at idle my car has a miss i only notice at like 700 rpms..I also have a slighty choppy ness when from like 700-950 like my car has a cam in it or somthing... Could the NEW tb cause this?
No codes on the scanner...
I checked plugs n wires...its not a plug or wire....

Please give me some idea's on what to check... I believe maybe on of the cleaned injectors i got from witchhunter might be causing but idk...
Any info would be greatly appreciated...