Audi A4 TDI 1.9 90(b5)
Engine Tuning Merseyside

Audi A4 TDI 1.9 90(b5) remap figures

• 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

What a remap does for a diesel Audi A4

Diesel engines respond strongly to remapping because the ECU controls injection quantity, injection timing and turbo boost pressure. Re-calibrating those maps typically brings the biggest improvement in mid-range torque, which is what you feel when overtaking or towing.

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

Audi A4 TDI 1.9 90(b5) against other A4 engines

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.

Audi A4 ECU tuning in Merseyside

Whether you live in Merseyside or nearby, the Merseyside Remap Experts site is your local route to a quote. We regularly work with drivers in Kirkby, Southport, Skelsmersdale, Knowsley and Halsall and nearby areas of the North West.

Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.

If you are closer to Liverpool, Warrington and Cheshire, those neighbouring Remap Experts sites can help too.