SEAT Altea 2004> 1.4 TSI 123bhp remap figures
The SEAT Altea 1.4 TSI 123bhp (2004>) is a petrol 1.4L model making 123bhp and 201Nm as standard. After a Stage 1 ECU remap we expect 147bhp and 269Nm - up to 24bhp and 68Nm 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 | 123 bhp | 147 bhp | +24 bhp |
| Torque | 201 Nm | 269 Nm | +68 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 123 bhp | 201 Nm | |
| Stage 1Maximum software-only performance | 147 bhp | 269 Nm | +24 bhp +68 Nm |
| Stage 1 EcoPerformance with economy in mind | 141 bhp | 264 Nm | +18 bhp +63 Nm |
| Eco mapEconomy first | 139 bhp | 260 Nm | +16 bhp +59 Nm |
Who is the Stage 1 map for?
- Drivers who want a noticeably quicker car from a software-only change, with no new parts.
- Daily drivers who want stronger mid-range pull and a sharper throttle.
- Anyone who wants the biggest gain we list without fitting hardware.
What this means for your Altea
Turbocharged petrol engines respond well to calibration changes: boost and timing are the main levers, and the result is a flatter, stronger torque curve as well as a higher peak.
The ECU recorded for this variant is a Bosch MED17. 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 SEAT Altea 1.4 TSI 123bhp?
We expect 147bhp and 269Nm against 123bhp and 201Nm as standard: up to +24bhp and +68Nm. 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 SEAT Altea 1.4 TSI 123bhp?
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: 141bhp and 264Nm expected. The Eco map is economy first: 139bhp and 260Nm. Both still sit above the standard 123bhp and 201Nm.
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 SEAT Altea figures
Other petrol variants
- 1.2 TSI 103bhp 2004>
- 1.6 100bhp 2004>
- 2.0 FSi 147bhp 2004>
- 1.8 TFSI 157bhp 2004>
- 1.4 83bhp 2004>
- 2.0 TFSi 197bhp 2004>
All petrol Altea variants · Altea 2004> overview · All SEAT figures