whne doing this mod do you also need to mod you ecu?
Yes. More air flow means you need some way to regulate it, ie SAFC.
Yep, any piggyback, standalone or modified ecu…
I don’t know about nissan’s but I know for DSM’s/Supra’s they make translators for those.
the translators also include a little bit of tuning capability but nothing fancy like an SAFC.