BHP+35 hp (33%)
Standard
105 hp
Tuned
140 hp
Torque+70 Nm (28%)
Standard
250 Nm
Tuned
320 Nm
Suitability
Excellent (8/10)Gains Profile
BalancedHeadroom
HighSeat Leon 1.9 TDI 105hp ECU Remapping
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.
How this engine compares
- 35thof 73 Seat Leon engines by power gain
- 54%of the 9,842 engines we hold gain data for see a smaller power increase
- 55%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
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.
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.