Hi there, hope you don't mind me butting in & I would be interested to see how your install turns out, you have a good question I think cos I haven't been to the faqs either. Just bought a D-jetro myself for my Stagea & was checkn the page u put up with your ?. Page 21 I think. Underneath your pic is the ecu pinouts which shows where things go. Cyl 3 or cyl 4 and color coding depends on which sensor goes where.
It's your call cos both those sensors are same pressure range (or mine are anyways) so can go any cyl. but wire colors are unique. Looking at diagram page 21 & 23 appears existing wires in cordset are deleted & replaced with the d-jetro jobs into ecu plug, (blue/green), hopefully sensor signal input.
Another reason I liked your question was cos my instructions were all in Nippon but now on closer inspection (pulled install manual outta rubbish bin) there may be some usuable info in there for a mono-lingual bunny like me after all.
Dumb question now, I thought D-jetro diff pressure sensors was so you could get around afm range?max calibrated air flow limitations, if so does boost controller kit use same sensors/setup? And/or are you more than halfway to infinitely variable boost control with the D-jetro setup?
Forgive the dq's but I just bought one cos it was shinyer than the ecu already bolted in.