Audi A4 · Stage 1
Audi A4 2.5 TDI Stage 1 Remap
On Audi A4 2.5 TDI diesel engines a Stage 1 remap recalibrates the fuel quantity, injection timing, boost pressure and torque limiter maps. No hardware is changed and the original software is backed up. The same engine is sold with different stock outputs across generations, so the gain depends on your version.
How much bhp does Audi A4 2.5 TDI chip tuning add?
It depends on the generation and the stock output. 2.5 TDI engines with 155–180 bhp reach 190–210 bhp with a Stage 1 remap; the largest gain is +35 bhp (B6 2.5 TDI 155hp). Pick your version in the table below.
Audi A4 2.5 TDI: Stage 1 figures by generation and year
Year / chassis: B6 - 2001 - 2004
| Engine | Power | Torque | Gain |
|---|---|---|---|
| Audi A4 2.5 TDI 155hp | 155 → 190 bhp | 310 → 390 Nm | +35 bhp |
| Audi A4 2.5 TDI 163hp | 163 → 190 bhp | 350 → 390 Nm | +27 bhp |
| Audi A4 2.5 TDI 180hp | 180 → 210 bhp | 370 → 420 Nm | +30 bhp |
Frequently asked questions
How much bhp does Audi A4 2.5 TDI chip tuning add?
It depends on the generation and the stock output. 2.5 TDI engines with 155–180 bhp reach 190–210 bhp with a Stage 1 remap; the largest gain is +35 bhp (B6 2.5 TDI 155hp). Pick your version in the table below.
What is the difference between Stage 1 and Stage 2 on the Audi A4 2.5 TDI?
Stage 1 is software only: no part of the car is changed and the figures in the table apply to this software. Stage 2 is software prepared for hardware changes such as the exhaust, intercooler or intake; the hardware comes first, then the software.
Will chip tuning damage the engine?
No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.
Will my fuel consumption go up?
With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.
How long does it take? Do I leave the car?
Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.
Can I go back to stock later?
Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.
Other engines and solutions for the Audi A4
Audi A4 2.0 TDI Stage 1
Audi A4 2.0 TFSI Stage 1
Audi A4 1.9 TDI Stage 1
Audi A4 3.0 V6 Stage 1
Audi A4 1.8 TFSI Stage 1
Audi A4 2.7 V6 Stage 1
Audi A4 40 TFSI Stage 1
Audi A4 1.8 T Stage 1
Audi A4 1.8T Stage 1
Audi A4 3.0 TDI Stage 1
Audi A4 3.0 TFSI Stage 1
Audi A4 35 TDI Stage 1
Audi A4 1.4 TFSI Stage 1
Audi A4 1.6i Stage 1
Audi A4 2.0 FSI Stage 1
Audi A4 2.0i Stage 1
Audi A4 3.2 FSI Stage 1
Audi A4 30 TDI Stage 1
Audi A4 35 TFSI Stage 1
Audi A4 40 TDI Stage 1
Audi A4 45 TFSI Stage 1
Audi A4 EGR fault solution
Audi Stage 1 Chip Tuning