Audi A4 1.9 TDI 90hp Remap

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.