VQLab
J31 · 2004

Nissan Teana ECU tuning

Back up, tune and flash the Teana's VQ23DE through the OBD port, with VQLab and a $10 K-line cable. No ECU to open.

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Nissan Teana✓ Supported

Supported ECU software versions

Software IDFitted to
9Y412Teana 2004 (JDM), VQ23DE automatic

Not sure which one your car has? VQLab Lite reads it from the ECU when it connects, for free.

What you can tune

VQLab shows the Teana's maps as editable heatmap grids, with undo, compare and smoothing. Depending on the ECU software version, they include ignition timing, fuel targets, rev and speed limiters, airflow (MAF) scaling, injector settings and cam timing. What each map does.

How to start

  1. Get a K-line USB cable with a CH340 chip, about $10 (which cable).
  2. Back up your ECU with VQLab Lite. It's free and changes nothing in the car.
  3. Open the backup and look through every map.
  4. To edit and flash, get VQLab Pro: a one-off payment, 5 cars included.

Questions

This ECU software version: 9Y412 (Teana 2004 (JDM), VQ23DE automatic). VQLab Lite reads your ECU's software ID when it connects and tells you whether it's supported.

A K-line (KKL) USB cable with a CH340 chip, sold as a "VAG 409.1 KKL" cable for about $10. FTDI cables don't work.

No. VQLab reads and flashes the ECU through the OBD2 port under the dash. Nothing to open or solder.

Backing up and viewing every map is free with VQLab Lite. Editing and flashing needs VQLab Pro, a one-off payment that includes 5 cars.

Other supported cars