Citroen C4 (GEN 1) 2004-2010 1.6i 147bhp remap figures
The Citroen C4 1.6i 147bhp (2004-2010) is a petrol 1.6L model making 147bhp and 240Nm as standard. After a Stage 1 ECU remap we expect 195bhp and 290Nm - up to 48bhp and 50Nm more than stock.
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 | 147 bhp | 195 bhp | +48 bhp |
| Torque | 240 Nm | 290 Nm | +50 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 147 bhp | 240 Nm | |
| Stage 1Maximum software-only performance | 195 bhp | 290 Nm | +48 bhp +50 Nm |
| Stage 1 EcoPerformance with economy in mind | 183 bhp | 286 Nm | +36 bhp +46 Nm |
| Eco mapEconomy first | 179 bhp | 284 Nm | +32 bhp +44 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your C4
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
Engine management is by a Bosch MED17.4 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 Citroen C4 1.6i 147bhp?
We expect 195bhp and 290Nm against 147bhp and 240Nm as standard: up to +48bhp and +50Nm. 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 Citroen C4 1.6i 147bhp?
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: 183bhp and 286Nm expected. The Eco map is economy first: 179bhp and 284Nm. Both still sit above the standard 147bhp and 240Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Citroen C4 figures
Other petrol variants
- 1.6 140bhp 2004-2010
- 2.0i 138bhp 2004-2010
- 1.6i 120bhp 2004-2010
- 1.6i 110bhp 2004-2010
- 1.4i 88bhp 2004-2010
All petrol C4 (GEN 1) variants · C4 (GEN 1) 2004-2010 overview · All Citroen figures