I have some experience of mapping, but not extensive, and would probably have it fine tuned on a dyno once the spec is finalised. I've played with mapping on Yamaha R6 engines, and worked in a place that did lots of skylines so I know what to do, but am not an expert..
I'm basically planning a mild turbo on my cg13, with a 1.6 tb, uprated injectors, intercooler, and slightly opened head chambers (to lower compression on stock internals). The plan is to take a higher flowing MAF (probably off a silvia or something), and stick it between the filter and turbo.
This won't happen for a few months at least but I didn't realise that you could tune the ECU, so I was looking into what my options would be in terms of management.
I guess the other thing worth mentioning is that this would be run dual fuel, and setup for max power on LPG. I know Nistune doesn't support dual maps, but with 160hp, the LPG ECU should theoretically itself adjust to the mapped Nissan ECU once that's done... That was one of the reasons for MS'ing, as I could run two maps, and with an expansion board could run a boost controller to limit boost on the petrol map. I am unsure whether the Emanage would support something like this, but I'm fairly certain Nistune would not!!
I was under the impression that Nistune 4 wasn't released yet and so couldn't run on the small ECUs like the K11? If I went down that route I would most certainly come down to you to have it set up (I can do a safe map to get it going), especially if you've got dyno access.
What would be the main pros/cons of going Emanage Ult. vs. Nistune? I quite like the idea of retaining the stock ECU, but what I'm concerned slightly about is that Emanage would allow better logging, and more control over ignition and boost control.
Apologies for a lengthy post