Nissan/Infiniti [Discontinued]

Owned by Brandyn Mowat
Jul 23, 2018
4 min read

This product and Accesstuner for this platform are no longer available and further support has been discontinued.  This page is solely meant to offer information for those who have purchased one used or still have one available to them.





Congratulations on your purchase of the AccessPORT for the 2007-2008 Infiniti G35, G35S, G35SX, G37, or G37S.  



Accessport Part Number and Vehicle Coverage

AP-NIS-001
 Serial Numbers Start - 311

  • 350z 2003 - 2006
  • Final Firmware Version 1.6.1.0 - 13523


AP-NIS-002
Serial Numbers Start - 321

  • G35 Coupe and Sedan 2003 - 2007
  • Final Firmware Version 1.6.1.0 - 13523


AP-NIS-003
Serial Numbers Start - 331

  • 350Z 2007 - 2008
  • 370Z 2009 - 2010
  • Final Firmware Version 1.5.0.4-12626


AP-NIS-004
Serial Numbers Start - 341

  • 350Z 2007 - 2008
  • 370Z 2009 - 2010
  • Final Firmware Version 1.5.0.4-12626


Nissan 350/370Z and Infiniti G35/G37 Map Notes

  • Maps pre-loaded on your AccessPORT:
    • Stage1 91 – Designed specifically for a 2007-2008 G35, G35S, G35SX, G37, or G37S with a stock or aftermarket cat-back exhaust and STOCK INTAKE SYSTEM ONLY. Minimum 91 octane gasoline required. 92-94 octane gasoline may also be used. Rev Limit is set 500 RPM higher than stock.

    • Stage2 91 – Designed specifically for a 2007-2008 G35, G35S, G35SX, G37, or G37S with a stock or cat-back exhaust, high flow catalytic converters, and STOCK INTAKE SYSTEM ONLY. Minimum 91 octane gasoline required. 92-94 octane gasoline may also be used. Rev Limit is set 500 RPM higher than stock.

    • Anti-Theft Mode – This map was designed to not allow the vehicle to start.

    • Stock Style Mode – Stock Style Mode map. Uses stock values for conditions when you need the vehicle's ECU to act like it is still stock. DOES NOT UNINSTALL AP FROM THE ECU.

    • Valet Mode – Valet Mode for a 2007-2008 G35, G35S, G35SX, G37, or G37S with STOCK INTAKE SYSTEM ONLY. Rev limiter set to 3200 RPM.





Accessport Functions

  • You can check and reset your Check Engine Light and various DTC codes (transmission and chassis modules).
  • You can use the AccessPORT to view various engine data with the Live Data function.
  • The AccessPORT can be used to measure and record 0-60 MPH and ¼ mile performance.








Live Data Parameters

  • Coolant Temp – Measurement of the coolant temperature in the engine block. Measured as degrees Celsius for metric measurements and degrees Fahrenheit for standard measurements, also known as ECT.
  • Vehicle Speed – Measurement of how fast the vehicle is going according to the input from the Vehicle Speed Sensor(s). Measured in Kilometers Per Hour (KPH) for metric measurements and Miles Per Hour (MPH) for standard measurements, also known as VSS.
  • Battery Volts – Measurement of battery voltage at the ECM.
  • Calc. Load – (Calculated Load) An engine load value calculated by the ECU. In simpler terms, this value is a measurement of airflow per cylinder per engine revolution. This can also be referred to as Volumetric Efficiency (VE) or engine torque.
  • Throttle Position – Measurement of the throttle plate position; 100 being a fully open throttle plate, 0 being a fully closed throttle plate, also known as TPS.
  • Engine Oil Temp – Measurement of the engine oil temperature in the engine block. Measured as degrees Celsius for metric measurements and degrees Fahrenheit for standard measurements, also known as EOT.
  • MAP Sensor – Manifold Absolute Pressure (MAP) measured relative to the absolute zero pressure (the pressure that would occur at absolute vacuum). Measured as Bar for Metric and PSI for Standard measurements, also known as MAP.
  • Engine RPM – A count of Revolutions of the crankshaft Per Minute, how fast the engine crankshaft is spinning.  One 360 degree revolution of the crankshaft = 1 RPM.
  • Mass Air Flow – Measurement of the instantaneous Mass Air Flow sensor measurements in grams/sec.
  • A/F Correction – Percentage measurement of the MASS of fuel the ECU is immediately adding (above 100) or subtracting (below 100) to the engine to achieve its fuel target for the given conditions. This variable is measured in percentage. For example, 92% represents a -8% fuel trim, 104% represents a +4% fuel trim. This is also know as the OBD II term, Short-Term Fuel Trim (STFT).
  • Air Fuel Sensor – Measurement of Air/Fuel sensor voltage.
  • Lambda – Engineering term used to demonstrate the Stoichiometry of a hydrocarbon based fuel.
    • 1 Lambda λ= Stoichiometry of given fuel, (<1λ) less than 1 Lambda is richer and (>1λ) greater  than 1 Lambda is leaner.
  • Air Fuel Ratio – Measured ratio (by the factory Primary Heated Oxygen Sensor) of air MASS to fuel MASS. Air MASS/Fuel MASS = A/F Ratio. This sensor has been calibrated to be accurate around 1 Lambda or 14.68 AFR.
  • Intake Cam Adv – Measurement of intake camshaft advance of the engine. This variable is measured in camshaft degrees.


Additional Reference Materials

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