I installed 555 injectors a Gen. 2 salin dual maf intake set up with a Z1 motorsport eprom chip and the car runs good in boost but idling and low rpm
runs a little rough. Any suggestions on what this may be or where to start looking. As always thank you guys you are the best!!!!!!

What 555s are they? A small vacuum leak can causer your issue, or a badly modified injector (if they are modified and not manufactured 555s). Those are the first two things I'd look at.

They are nismo 555 old style injectors we did an extensive boost leak and didn't find much

Thank you for the help as always

Might be possible that your Z1 tune is for new style Nismo 555 which actually flow 600-615cc.
IIRC old style purple tops flow 555cc.
What is the idle roughly at?

When I had my car tuned by SZ, they set the idle to run 900rpm in the ecu instead of the OEM 700 ish. (Nismo 740)
I'm not sure if this applies to 555 just something to note.

They likely set your idle high because getting big injectors to idle properly is usually the hardest part about tuning for them because the duty cycle is so low.

Bfish, are your 555s new or refurnished? If refurbished then could be whomever did the work installed low quality pintle caps. or could be that your car has something going on that under stock conditions was there but not as apparent. If the EPROM was and OTS tune then its not specific enough to your car. Lastly since you have the Selin I'm guessing you're running a true DUAL MAF setup in which case the MAFs may not be in sync, one may be a little more aged. That theory goes out the window if they are both new OEM units.

One of the mafs is original to my car I bought a used selin with 2 mafs and one was actually bad and tripped a ted light on the selin unit the other one did not trip a red light but I dont know how old the 2nd maf is.......how does the out of sync scenario work and what would it do to the car running wise

I had a z1 chip in the car car previously before installing the 555 injectors and the selin I just got a new chip from z1 with the add on that I installed

Wanted to give an update might help someone else in the future I took the MAFs apart and cleaned them with maf sensor cleaner and it runs like a champ now it was a dirty MAF thanks for the help guys!!!!!