Considering an ECU remap for your Audi A4 1.9 TDI 90hp? A Stage 1 remap can take this B5 - 1995 - 2001 diesel engine from 90 BHP to 120 BHP and from 202 Nm to 270 Nm of torque (turbocharged). This engine scores 8/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Audi A4 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Audi A4 1.9 TDI 90hp is a 1.9L turbocharged diesel engine producing 90 BHP and 202 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 120 BHP and 270 Nm — a gain of around 30 BHP (33%) and 68 Nm (34%).
This engine scores highly for remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the ECU is typically a Bosch EDC15 (likely), and the transmission is manual and dsg/s tronic automatics are common depending on model/engine..
Considerations: Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: economy gains unlikely at full power; depends on driving style.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 1.9 TDI 75hp | 75 → 90 | +15 | 150 → 225 | +75 | Excellent (8/10) |
| 1.9 TDI 110hp | 110 → 143 | +33 | 240 → 320 | +80 | Excellent (8/10) |
| 1.9 TDI 115hp | 115 → 145 | +30 | 285 → 360 | +75 | Good (7.5/10) |
| 1.8i 20v 125hp | 125 → 135 | +10 | 170 → 185 | +15 | Moderate (4/10) |
| 1.8 T 150hp | 150 → 192 | +42 | 210 → 310 | +100 | Excellent (8/10) |
| 1.8 T 180hp | 180 → 192 | +12 | 210 → 310 | +100 | Good (7.5/10) |
Get a personalised remap quote for your Audi A4. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
