Considering an ECU remap for your Seat Leon 1.9 TDI 105hp? A Stage 1 remap can take this 1P - 2005 - 2012 diesel engine from 105 BHP to 140 BHP and from 250 Nm to 320 Nm of torque (turbocharged). This engine scores 8/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Seat Leon can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Seat Leon 1.9 TDI 105hp is a 1.9L turbocharged diesel engine producing 105 BHP and 250 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 140 BHP and 320 Nm — a gain of around 35 BHP (33%) and 70 Nm (28%).
This engine scores highly for remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
Considerations: Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 1.4i 16v 85hp | 85 → 95 | +10 | 130 → 145 | +15 | Moderate (4.5/10) |
| 1.2 TSI 86hp | 86 → 140 | +54 | 160 → 225 | +65 | Excellent (8/10) |
| 1.6 TDI 90hp | 90 → 140 | +50 | 230 → 310 | +80 | Excellent (8/10) |
| 1.9 TDI 90hp | 90 → 140 | +50 | 210 → 320 | +110 | Excellent (8/10) |
| 1.6i 8v 102hp | 102 → 112 | +10 | 148 → 165 | +17 | Moderate (4.5/10) |
| 1.2 TSI 105hp | 105 → 140 | +35 | 175 → 225 | +50 | Excellent (8/10) |
| 1.6 TDI 105hp | 105 → 140 | +35 | 250 → 320 | +70 | Excellent (8/10) |
| 1.4 TSI 125hp | 125 → 150 | +25 | 200 → 265 | +65 | Good (7.5/10) |
| 2.0 TDI 140hp | 140 → 175 | +35 | 320 → 390 | +70 | Good (7.5/10) |
| 2.0 FSI 150hp | 150 → 160 | +10 | 200 → 215 | +15 | Moderate (4/10) |
| 1.8 TSI 160hp | 160 → 210 | +50 | 250 → 340 | +90 | Excellent (8/10) |
| 2.0 TDI 170hp | 170 → 200 | +30 | 350 → 420 | +70 | Good (6.5/10) |
| 2.0 TFSI 185hp | 185 → 250 | +65 | 270 → 360 | +90 | Excellent (8/10) |
| 2.0 TFSI 200hp | 200 → 250 | +50 | 280 → 360 | +80 | Good (7.5/10) |
| 2.0 TFSI FR 210hp | 210 → 260 | +50 | 280 → 380 | +100 | Good (7.5/10) |
| 2.0 TFSI 240hp | 240 → 310 | +70 | 300 → 410 | +110 | Excellent (8/10) |
| 2.0 TFSI 265hp | 265 → 310 | +45 | 350 → 420 | +70 | Good (6.5/10) |
| 2.0 TFSI 310hp | 310 → 330 | +20 | 420 → 470 | +50 | Moderate (5.5/10) |
Get a personalised remap quote for your Seat Leon. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
