Alfa Romeo Giulietta 1.6 JTD Stage 1: 120→151hp

Alfa Romeo Giulietta 1.6 JTD Stage 1: 120hp → 151hp, 320→384Nm. Validated DMS calibration, proven on our dyno — not an off-the-shelf file. From €450. Athens…

Alfa Romeo Giulietta Stage 1: 120 hp → 151 hp

Factory output for the Alfa Romeo Giulietta 1.6 JTD is 120 hp and 320 Nm. A Stage 1 remap targets 151 hp and 384 Nm — 31 hp (+26%) and 64 Nm (+20%).

Those are the figures we work to on this engine. They are a starting point, not a promise: the number we hand back is the one your car makes on our dyno, measured before and after on the same day, in the same conditions.

Where the 64 Nm shows up

On a diesel the useful change is torque, not peak power. Going from 320 Nm to 384 Nm fills in the mid-range, which is where an Alfa Romeo Giulietta actually spends its time — pulling from 1,800 to 3,000 rpm in a high gear, overtaking without dropping two gears, towing or carrying weight without the engine falling on its face.

Peak power moves too, 120 hp to 151 hp, but you will feel the 64 Nm far more often than the 31 hp.

What Stage 1 involves on an Alfa Romeo Giulietta

We read the ECU, log the car as it stands, and put it on the dyno to confirm the 120 hp baseline — a tired or faulty engine gets diagnosed before it gets mapped, not after.

The calibration is written for your car, not pulled from a file library. We adjust fuelling, ignition timing, injection timing and boost, then re-run the dyno to verify the 151 hp and 384 Nm figure and check knock, lambda and temperatures under load.

Turnaround is same-day for most cars. Stock file is archived, so the car can go back to standard whenever you want.

Which Alfa Romeo Giulietta this covers

These figures are for the 1.6 JTD as fitted 2019 onwards. Engine code and ECU type decide what is possible, so send us the registration or VIN and we will confirm the exact variant before you book anything.

Alfa Romeo Giulietta remap price and booking

Stage 1 for the Alfa Romeo Giulietta 1.6 JTD starts at €450, including the dyno runs before and after and the stock-file archive.

We work from Leoforos Karamanli 127, Artemida 19016, east of Athens, and tune remotely across Europe where the ECU allows it. WhatsApp +30 697 728 8810 with your registration for a straight answer on your car.

Other Alfa Romeo Giulietta engines

• Alfa Romeo Giulietta 1.6 JTDm — Stage 1 (105hp stock)
• Alfa Romeo Giulietta 1.6 JTDm — Stage 1 (120hp stock)
• Alfa Romeo Giulietta 1750 TBI — Stage 1 (235hp stock)
• Alfa Romeo Giulietta 1.750 TBI — Stage 1 (240hp stock)
• Alfa Romeo Giulietta 1750 TBI QV — Stage 1 (240hp stock)
• Alfa Romeo Giulietta 2.0 JTD — Stage 1 (170hp stock)
• Alfa Romeo Giulietta 2.0 JTDm — Stage 1 (136hp stock)
• Alfa Romeo Giulietta 2.0 JTDm — Stage 1 (140hp stock)
• Alfa Romeo Giulietta 2.0 JTDm — Stage 1 (150hp stock)
• Alfa Romeo Giulietta 2.0 JTDm — Stage 1 (163hp stock)

More Alfa Romeo tuning

• Alfa Romeo MiTo 0.9 Twinair — Stage 1 (85hp stock)
• Alfa Romeo Stelvio 2.0 TB — Stage 1 (280hp stock)
• Alfa Romeo Tonale 1.5T — Stage 1 (131hp stock)
• Alfa Romeo 147 19Jtd — Stage 1 (100hp stock)
• Alfa Romeo 156 19Jtd — Stage 1 (105hp stock)
• Alfa Romeo 159 1750 TB — Stage 1 (200hp stock)
• Alfa Romeo 166 2.4 JTD — Stage 1 (136hp stock)
• Alfa Romeo 4C 1750 TBI — Stage 1 (240hp stock)

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