Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003)
Engine Tuning Essex
Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003) in Essex. 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
Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003): standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+38 bhp · +22%- Standard175 bhp
- Remapped213 bhp
Torque
+75 Nm · +19%- Standard385 Nm
- Remapped460 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
Standard, the Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003) makes 175 bhp and 385 Nm. With Remap Experts in Essex it moves to 213 bhp and 460 Nm, which adds 38 bhp (22%) and 75 Nm (19%).
Figures are indicative stage 1 estimates for a healthy diesel Alfa Romeo 166; results vary with the condition of the vehicle.
Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003) power and torque after remapping
- Fuel: Diesel
- Standard power: 175 bhp, remapped: 213 bhp (+38 bhp, +22%)
- Standard torque: 385 Nm, remapped: 460 Nm (+75 Nm, +19%)
- Service: stage 1 ECU remap, fully dyno tested
How engine tuning works on a diesel Alfa Romeo 166
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, JTD and Multijet are the Fiat Group names for its common-rail diesel engines.
Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003) against other 166 engines
Ranked by power gain against the other diesel 166 engines (7 in total), the JTD 2.4 Multijet (JTDm) 175 (+2003) is 1st, 2 bhp above the 166 diesel average of 36 bhp.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 38 bhp and 75 Nm sits at or above that benchmark.
Alfa Romeo 166 ECU remapping in Essex
This is the Essex site of the Remap Experts network, serving local drivers. We regularly work with drivers in Ipswich, Stowmarket, Southend-on-Sea, Saffron Walden and Halstead and nearby areas of the East of England.
You get a fully dyno tested remap, a 30 day money back guarantee and a lifetime software warranty with every job. Get your quote today on 0800 779 7864.
If you are closer to London, Suffolk and Hertfordshire, those neighbouring Remap Experts sites can help too.

Want these figures on your Alfa Romeo 166 JTD 2.4 Multijet (JTDm) 175 (+2003)?
Tell us about your car and we will come back with a quote by SMS or phone.
Included
What we can do for your Alfa Romeo 166
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.
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