I'm using uprev in my N16 pulsar hatch turbo conversion and I couldnt be happier with the product. It's exactly what I wanted out of the car. to retain all the factory cold start and reliability.
I purchased the tuner package and had adam at JEM tune the car. Adam did run into a few initial issues with the software, but that was only due to the fact he'd never used it before.
I myself would love the ability to use map switching, however its not a requirement. It doesn't take that long to reflash the ecu anyways.
I've done a bit of homework with regards to wiring for the cruise control, and my car has none of it in place. It was never an option for the n16 hatches, it was only ever available on the n16 sedan autos.
doing the wiring and installing the additional switches is pretty much a no brainer. It's not hard to compare a couple of wiring diagrams, for that of my car and the b15 sentra(us equivalent) to work out what wiring is missing.
The concern I have is wether the ECU firmware has the ability to receive inputs from these switches and activate cruise control. Which i'm of the opinion it doesn't.