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your best bet is going with a flash tune ecu.
R.S. Enthalpy: Nissan ROM Tunes, ECU Reflashes and Dyno Tuning. Tampa Bay, Florida. or
JIM WOLF TECHNOLOGY, INC. / NISSAN PERFORMANCE / NISSAN RACING /INFINITI PERFORMANCE you dont need a standalone for your current set up unless you plan on racing/400hp+, its a complete waste of money.. your going to pay for a dyno day and tune on the spot which will cost you over 1000... if your looking for something just write down your specs and flash it man, its your first swap so just go for a base/specific tune.