Audi A6 TDI 1.9 90(c4)
ECU Tuning in Scotland
Audi A6 TDI 1.9 90(c4) in Scotland. Standard and remapped figures for this exact engine.

- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Audi A6 TDI 1.9 90(c4): standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+35 bhp · +30%- Standard115 bhp
- Remapped150 bhp
Torque
+68 Nm · +24%- Standard285 Nm
- Remapped353 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
A stage 1 remap lifts the Audi A6 TDI 1.9 90(c4) from 115 bhp to 150 bhp, and from 285 Nm to 353 Nm of torque. That is 35 bhp (30%) more power and 68 Nm (24%) more torque from software alone, available in Scotland.
These are indicative figures for a diesel Audi A6 in good health. Your own results depend on the condition of the car.
Audi A6 TDI 1.9 90(c4) power and torque after remapping
- Fuel: Diesel
- Standard power: 115 bhp, remapped: 150 bhp (+35 bhp, +30%)
- Standard torque: 285 Nm, remapped: 353 Nm (+68 Nm, +24%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a diesel Audi A6
Modern diesels are held back by conservative factory calibrations. A remap updates the fuel and boost maps stored in the ECU, which is why drivers notice stronger acceleration from low revs and less need to change down on hills or when loaded.
For reference, TDI is the Volkswagen Group name for its turbocharged direct-injection diesel engines.
How the Audi A6 TDI 1.9 90(c4) compares
Ranked by power gain against the other diesel A6 engines (25 in total), the TDI 1.9 90(c4) is 18th, 5 bhp below the A6 diesel average of 40 bhp.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 35 bhp and 68 Nm sits at or above that benchmark.
Book engine tuning for your Audi A6 in Scotland
Remap Experts Scotland is part of the UK-wide Remap Experts network. We regularly work with drivers in Penicuilk, Kirkcaldy, Musselburgh, Livingston and Gorebridge and nearby areas of Scotland.
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 Edinburgh, Glasgow and Fife, those neighbouring Remap Experts sites can help too.

Want these figures on your Audi A6 TDI 1.9 90(c4)?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Audi A6
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other A6 engines
- Audi A6 1.8t 150 Cv(c5)petrol
- Audi A6 1.8t 180(c4/c5)petrol
- Audi A6 2.0 TFSI 170(c6)petrol
- Audi A6 2.4 165(c5)petrol
- Audi A6 2.4 170(c5)petrol
- Audi A6 2.7t 230(c5)petrol
- Audi A6 2.7t 250(c5)petrol
- Audi A6 3.0 V6 220(c5)petrol
- Audi A6 3.2 FSI 255(c6)petrol
- Audi A6 4.2 300(c5)petrol
- Audi A6 Allroad 2.5 V6 TDI 163 QuaTTro(c5)diesel
- Audi A6 Allroad 2.5 V6 TDI 180 QuaTTro(c5)diesel
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide