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dude its totaly worth it hands down..tuning is made simple when you have the license just go to a tuning shop with your lap top get it tuned..period!
very user friendly my tuner showed me how it was all simply done..My daily gt28r set up was at 300hp/310tq very reliable...I didnt hit it hard...??.. occassionaly I did
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I just upgrade to gt2871r ar.86 so back to the dyno I go, my tuner loves how simple it is that it plugs right into the stock diagnostic plug via consunt cable(ecu talk/autovaughn cable)...he didnt want to touch it when I had the calum rt in it....(not knocking the calum rt) nistune just made it simpler since it is specificly for nissans..so it was a no brainer for me! good luck!