Sale

2017 - 2020 Audi A4 B9 A4 A5 2.0t ECU TUNE (REMOTE)

Availability:
Usually ships in 24 hours
$550.00 $450.00
(1 review)
Width:
7.00 (in)
Height:
1.00 (in)
Depth:
7.00 (in)
Current Stock:
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Software Product — No Vehicle IncludedThis listing is an ECU calibration file and remote flashing service for the vehicle listed above. Boost Dynamic Tuning does not sell, broker, or supply motor vehicles. Vehicle names, model years and photographs are used solely to identify which car this software is compatible with.
Boost Dynamic Tuning

Audi A4 / A5 B9 2.0T ECU Tune

Real Numbers. Real Pulls.

Tap a stage — power, fuel, and required mods at a glance. From the B9's 232 HP / 262 TQ advertised stock.

Horsepower~282WHPstock turbo
Torque~360WTQon 93 octane
Fuel: 93 octaneRequired mods: none — stock hardwareData: peaks dyno-verified
Horsepower~362HPcrank figures
Torque~442TQwith high-flow exhaust
Fuel: 93 octaneRequired mods: high-flow exhaustData: peaks dyno-verified
 

How It Works — Flash It Yourself

No appointments. No screen-share. The free BDT Flasher app puts the tune in your driveway — plug in, pick your map, hit Flash. Your A4 / A5 sounds different in 20 minutes.

1

Download — grab the free BDT Flasher for Windows or Mac. One-click install, 30 seconds.

2

Plug In — the BDT tuning cable you pick above: OBD2 to USB or OBD2 to Type C runs from your laptop to the port under the dash. Picked the Mobile Phone Flasher? Plug it into the port and pair it with your phone.

3

Sign In — your purchased tunes show up automatically. Pick your map.

4

Send It — hit Flash. 15–20 minutes, then pull out of the driveway.

Watch — Flash It & Pull a Data Log (shown on an Audi 4.0T — same app, same steps)

Existing BDT customer? Text (843) 891-6687 and we'll load your tune into the flasher.

What's Included

✓
Crackle PopsPick your level — changed on any re-flash, free
✓
Speed Limiter RemovedFactory Vmax restriction deleted
✓
Rev Limit RaisedMore usable RPM on every pull
✓
Torque Limiters RaisedFactory torque caps lifted for full delivery
✓
IAT + EGT Safety LogicOEM-grade protection strategies stay active
✓
Refined Boost ControlSmoother ramp, stronger midrange
✓
Flash It YourselfFlash at home with the free BDT Flasher — no appointment, no screen-share
✓
Auto Start/Stop Starts OffOff every time you start the car — press the button if you want it on

Hear It

The B9 on the overrun. Sound on.

Crackle Pops — B9

 

What Your Car Needs, Per Stage

If it is not listed as required, the tune runs without it.

REQ Required before flashing REC Recommended — Not needed
Part / UpgradeStage 1Stage 2
High-Flow Exhaust—REQ
Air IntakeRECREC
Intercooler UpgradeRECREC

Maintenance

Maintenance ItemInterval
SPARK PLUGS
NGK Racing Plugs
15-20K mi
OIL CHANGE
5W-40 Liqui Moly • OEM FILTER ONLY
5K mi
TRANSMISSION SERVICE / FLUSH
OEM fluid only
30K mi
MAP SENSORS
OEM only • intake / before throttle body
50K mi
PCV ASSEMBLY50K mi
INJECTORS + CARBON CLEANING
Direct injection builds carbon — do them on time
65K mi
 

Your ECU Is Safe

Your stock file is savedWe read and archive your factory file before a single byte is written. You can flash back to stock at any time, free.
Verified writes, safe abortsEvery flash is checksum-verified. If the connection drops mid-write the process aborts safely and can be resumed — it does not leave your ECU half-written.
You talk to the calibrator11+ years of in-house VAG calibration. The person who built your file is the person on the phone — not a reseller passing on someone else’s tune.

Reviews

  • 5
    Stage 2 ECU, and got a TCU tune

    Posted by Mark M on Sep 8th 2025

    Very nice bang for ur buck tune! Definitely feel the difference, and runs without any problems. Launch control is addicting