The "snip" mod only works for the 16 valve cars. There's no way to fool the 12-valve ECUs. WE've tried everything including a potentiometer on the speedo signal.
JWT's ECU is the best $600 you can spend on the car, outside of actual seat time.
I spent almost an hour on the phone with the JWT programmer, and he told me everything Nissan does to cripple the car, and everything JWT does to keep it from happening.
Michael