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Updated: Sep 17

DO NOT BEAT ON THE CAR BEFORE INSTRUCTED TO DO SO BY YOUR TUNER AND ALL STEPS HAVE BEEN COMPLETED. DOING SO CAN POTENTIALLY HARM THE ENGINE AS IT HAS TO BE DATA LOGGED AND CHECKED FIRST! Once this step is complete, and while waiting for the next set of instructions, the car can be driven normally with no wide open throttle pulls being made.

Now that you've completed the initial setup, we are now ready to start the actual tuning process. You have loaded a "BASEMAP" into your vehicle. A BASEMAP is a proven, tested, and safe prebuilt starting point that the tuner designs based on all of your modification and is used on other similar setups. Every car is different and even two cars with the exact same set will have two completely different final maps. This starting point is a watered down version of the final product that your completed tune will be based off of. Boost, timing, and fuel are set well within safe limits meant as a safety for properly running cars to MINIMIZE failure.

Please note, as stated previously, a BASEMAP is meant to minimize failure. It has been tested on a vast majority of customer cars and has been proven to be safe. That DOES NOT guarantee a failure will not occur. Just as a completely stock engine/turbo/drivetrain with zero modifications can fail, a vehicle modified past stock will decrease the safety margin of error and a failure can occur. Failing, worn, or faulty parts that may have operated issue free on a stock car can almost immediately fail once more power is applied to them. This is the risk you take and accept when you modify your vehicle.


With the vehicle running, open the ECUTEK APP and go to MY CAR and then select Data logging. From there, select the gear icon at top right. This is the datalogging parameters selection.


UPDATE 9/17/2023: You can now skip the step below entirely. Instead of selecting each individual parameter, pleases click the folder icon at the top right of the DATALOG page. You will see a file with a name starting with either a Q_ or Z_ (Q_BASIC/Q_RS/Z_BASIC/Z_FLEX/VQ37) depending on your vehicle and setup. Once this is done, proceed to step 3.

START BY UNCHECKING EVERY CHECKED BOX. Once you've unchecked everything, please go back to the top and add the parameters EXACTLY HOW YOU READ THEM. Some parameters are very close in name but are not the same. Once you have verified the list below are the only parameters selected, press Done and go back to the main datalogging page.

(If you purchased a complete kit from SONICTUNED LLC, please reference the 4x6 card included with the tuning kit that has the list below for ease of setup.)


Accelerator Sensor #1

AFR Bank 1

AFR Bank 2

AFR Target B1

Atmospheric Pressure

Boost Bank 1

Boost Bank 2

Boost Error

Boost Target

Boost Target multiplier

Charge Air Coolant Temp

Charge Air Temp

Coolant Temperature

Engine Load

Engine Oil Pressure

Engine Oil Temperature

Engine Speed

Fuel Injection End to Spark (s)

*FlexFuel Ethanol Content <---(only check this parameter if you have flex fuel)

Fuel Pressure (Racerom)

Fuel Pump Angle Target - Base

Fuel Pump Angle Target

Fuel Trim Short Term B1

Fuel Trim Short Term B2

Gear - Current

Ignition Final

Injector Pulse Width Converted

Knock Index - Cylinder 1

Knock Index - Cylinder 2

Knock Index - Cylinder 3

Knock Index - Cylinder 4

Knock Index - Cylinder 5

Knock Index - Cylinder 6

Knock Retard

Manifold Gauge Pressure


Throttle Position Sensor 1 B1

Torque Actual

Torque Demand 1

Torque Red Request 1

*Turbo Speed B1 (rpm) <---(only check this parameter if you have a RED SPORT OR Z)

*Turbo Speed B2 (rpm) <---(only check this parameter if you have a RED SPORT OR Z)

Vehicle Speed

WG Actuator Position B1 (mm)

WG Actuator Position B2 (mm)

WG Corr-Integral

WG Corr-Proportional

WG Corr-Transient

WG Offset-during Gearshift

WG Target-Air Temp Comp

WG Target- Position

370Z/G37/2015 Q50 VQ37 PARAMTERS:

Accelerator Pedal Sensor #1 (V)

AFR bank1 (afr)

AFR bank2 (afr)

AFR Target Final B1 (afr)

Coolant temperature

Custom Map F Interim

Engine Load (%)

Engine Load Absolute MAF (g/rev)

Engine Speed (rpm)

Fuel Trim Long Term Bank #1 (%)

Fuel Trim Long Term Bank #2 (%)

Fuel Trim Short Term Bank #1 (%)

Fuel Trim Short Term Bank #2 (%)


Ignition Correction

Ignition Timing

Ignition Timing Calculated

Intake Air Temperature

Knock Sensor Cylinder 1

Knock Sensor Cylinder 2

Knock Sensor Cylinder 3

Knock Sensor Cylinder 4

Knock Sensor Cylinder 5

Knock Sensor Cylinder 6

Mass Airflow MAF (g/s)

Mass Airflow Sensor Bank #1 (V)

Mass Airflow Sensor Bank #2 (V)

Throttle position Sensor #1 (V)

Torque Actual (Nm)

Torque Demand (Nm)

Vehicle speed #1

VTC advance Actual #1

VVEL Actual Valve Duration (°CAM)

Wheel Slip Ratio (%)


It is now time to send a test idle log. Going forward, this will be how you take and send a datalog. After the basemap, you will receive a revision, datalog it, send the log, and wait for your next revision. To datalog, you will go to MY CAR then select Data logging. From there, you will see the list you previously selected. At the bottom, you will see a circle button labeled START. That has how you start a datalog. To stop a datalog, the same button you pressed to start the log will now say STOP. Press STOP once the datalog is complete. PLEASE NOTE: THE CAR WILL NOT BE DRIVEN FOR THE INITIAL LOG. THIS WILL BE DONE AT IDLE. PLEASE TAKE A 10 SECOND LOG OF THE VEHCILE AT IDLE ONLY . Please make sure the car is up to temperature before taking a datalog. The coolant temperature should be at or over 185*f. You will be provided with specific instructions on how to do the remaining logs once this initial step has been completed.


Now that you've taken your test datalog, it is time to send it to your tuner to verify the list has been added correctly. In the ECUTEK main menu, select MY FILES then select Data logs. From there, you will see that the logs are labeled by date and time with the top log being the newest. Select the top log(the only log for the test). From there, you need to send it to the tuner. You will see the send file icon at the bottom of the log. Select that and then select "SEND TO SONICTUNED"

Once this is done, I will receive an email with all of the information from this step and send a detailed email for the next step. The car is not safe to race or beat on but can be driven normaly.


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