Alfa Romeo 156 1997-2005 2.4 JTD 150bhp remap figures
Stock, this 1997-2005 Alfa Romeo 156 diesel (2.4L) produces 150bhp and 305Nm. Our expected figures for a Stage 1 remap are 206bhp and 406Nm, an expected gain of up to 56bhp and 101Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 150 bhp | 206 bhp | +56 bhp |
| Torque | 305 Nm | 406 Nm | +101 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 150 bhp | 305 Nm | |
| Stage 1Maximum software-only performance | 206 bhp | 406 Nm | +56 bhp +101 Nm |
| Stage 1 EcoPerformance with economy in mind | 192 bhp | 398 Nm | +42 bhp +93 Nm |
| Eco mapEconomy first | 188 bhp | 393 Nm | +38 bhp +88 Nm |
Who is the Stage 1 map for?
- Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
- Daily and motorway drivers who want the engine to feel less strained at cruising speed.
- Anyone who wants the biggest software-only change we list for this engine.
What this means for your 156
On a diesel the biggest change is normally torque: the remap changes how much fuel and boost the ECU allows across the rev range, so pulling power arrives earlier and holds on longer.
Engine management is by a Bosch EDC15C7 unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Alfa Romeo 156 2.4 JTD 150bhp?
We expect 206bhp and 406Nm against 150bhp and 305Nm as standard: up to +56bhp and +101Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Alfa Romeo 156 2.4 JTD 150bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 192bhp and 398Nm expected. The Eco map is economy first: 188bhp and 393Nm. Both still sit above the standard 150bhp and 305Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.