Alfa Romeo 159 JTD 1.9 Multijet (JTDm) 120
Engine Tuning in Somerset

Alfa Romeo 159 JTD 1.9 Multijet (JTDm) 120 remap figures

• Fuel: Diesel
• Standard power: 120 bhp, remapped: 157 bhp (+37 bhp, +31%)
• Standard torque: 280 Nm, remapped: 355 Nm (+75 Nm, +27%)
• Service: stage 1 ECU remap, fully dyno tested

How engine tuning works on a diesel Alfa Romeo 159

The gains from remapping a diesel come from the engine management software rather than new parts: injection, boost and torque limits are re-mapped, which is why torque improves most and why the car often feels easier to drive at lower revs.

For reference, JTD and Multijet are the Fiat Group names for its common-rail diesel engines.

How the Alfa Romeo 159 JTD 1.9 Multijet (JTDm) 120 compares

Of the 4 diesel 159 engines in our data, this one comes 1st for power gain, which is 1 bhp above the 159 diesel average of 36 bhp.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 37 bhp and 75 Nm sits at or above that benchmark.

Alfa Romeo 159 performance tuning in Somerset

Based around Somerset, our team serves local drivers as part of the nationwide Remap Experts network. We regularly work with drivers in Norton Radstock, Weston-Super-Mare, Wells, Taunton and Minehead and nearby areas of the South West.

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 Bristol, Bath and Devon, those neighbouring Remap Experts sites can help too.