SEAT Leon (5F) 2014> 1.4 TSI 123bhp remap figures
The SEAT Leon 1.4 TSI 123bhp (2014>) is a petrol 1.4L model making 123bhp and 199Nm as standard. After a Stage 1 ECU remap we expect 190bhp and 297Nm - up to 67bhp and 98Nm 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 | 190 bhp | +67 bhp |
| Torque | 199 Nm | 297 Nm | +98 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 123 bhp | 199 Nm | |
| Stage 1Maximum software-only performance | 190 bhp | 297 Nm | +67 bhp +98 Nm |
| Stage 1 EcoPerformance with economy in mind | 173 bhp | 289 Nm | +50 bhp +90 Nm |
| Eco mapEconomy first | 168 bhp | 284 Nm | +45 bhp +85 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 Leon
On a turbocharged petrol engine a remap adjusts boost, ignition timing and fuelling together, so both power and mid-range torque rise and the car pulls harder out of corners and junctions.
Engine management is by a Bosch MED17.5.25 unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 Leon 1.4 TSI 123bhp?
We expect 190bhp and 297Nm against 123bhp and 199Nm as standard: up to +67bhp and +98Nm. 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 Leon 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: 173bhp and 289Nm expected. The Eco map is economy first: 168bhp and 284Nm. Both still sit above the standard 123bhp and 199Nm.
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 Leon figures
Other petrol variants
- 1.2 TSI 108bhp 2014>
- 1.4 TSI 138bhp 2013>
- 1.2 TSI 103bhp 2013>
- 1.5 TSi 147bhp 2017>
- 1.4 TSI 150bhp 2015>
- 1.2 TSI 84bhp 2013>
- 1.8 TSi 177bhp 2013>
- Cupra 265bhp 2013>
- Cupra 276bhp 2014>
- 2.0 TSI 285bhp 2015>
All petrol Leon (5F) variants · Leon (5F) 2013-2020 overview · All SEAT figures