2007 Infiniti G35 surges

Hi pbluman, Welcome to 2carpros and TY for the donation

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.

I am having the same problem. I have noticed it when I start from a stop and the engine is relatively cold (first 5 minutes or so) or if barely pressing accelerator on highway. If i put the hammer down it goes away. Interested in answer as my dealership wants major $$$ everytime I go in there.