Audi A4 TDI 1.9 90(b5)
Engine Remapping in Cardiff

Audi A4 TDI 1.9 90(b5): remap at a glance

• Fuel: Diesel
• Standard power: 90 bhp, remapped: 121 bhp (+31 bhp, +34%)
• Standard torque: 202 Nm, remapped: 280 Nm (+78 Nm, +39%)
• Service: stage 1 ECU remap, fully dyno tested

Diesel Audi A4: what changes with a remap

On a diesel the ECU decides how much fuel is injected and how hard the turbo works. A remap adjusts those calibrations within safe limits, so the gains show up mainly as extra torque low in the rev range and smoother, more responsive pull.

For reference, TDI is the Volkswagen Group name for its turbocharged direct-injection diesel engines.

How the Audi A4 TDI 1.9 90(b5) compares

Of the 24 diesel A4 engines in our data, this one comes 21st for power gain, which is 7 bhp below the A4 diesel average of 38 bhp.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 31 bhp and 78 Nm sits below that benchmark.

Remapping your Audi A4 in Cardiff

Remap Experts has a dedicated Cardiff site, so you deal with a local team backed by a national network. We regularly work with drivers in Pentyrch, Rumney, Riverside, Rhiwbina and Llandaff and nearby areas of Wales.

All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.

If you are closer to Gwent, Bristol and Midwales, those neighbouring Remap Experts sites can help too.