Legend Tuned · Chip Tuning
Opel Astra J GTC / OPC 1.4 Turbo 120 HP Chip Tuning
- 2011–2018
- Petrol
- 120 HP · 200 Nm
- ECU: Delco E78
Target with Legend Tuned Stage 1: 165 HP / 265 Nm. The original software is backed up, the calibration is tailored to the car, and the result is verified by datalog.
Legend Tuned figures
Stage 1Figures are examples/estimates and may vary with the car's mileage, maintenance condition, fuel quality and hardware. Exact results are determined by dyno/datalog.
Power & torque curve
Stock vs Stage 1 comparison
A representative power and torque curve with a technical table of all figures. Hover over the chart to see values by rpm.
- Power · Stage 1
- Torque · Stage 1
- Power · Stock
- Torque · Stock
Technical figures
| Value | Stock | Stage 1 |
|---|---|---|
| Power | 120 HP | 165 HP |
| Power (kW) | 88 kW | 121 kW |
| Torque | 200 Nm | 265 Nm |
| Power gain | — | +45 HP (+38%) |
| Torque gain | — | +65 Nm (+33%) |
Figures are examples/estimates and may vary with the car's mileage, maintenance condition, fuel quality and hardware. Exact results are determined by dyno/datalog.
Custom software · 7 options
Custom software options for this engine
Legend Tuned functions suitable for this engine, which can be applied in the same session as Stage software or on their own.
Emission Systems
Emission system solutions for track and motorsport projects.
- Catalytic Converter Delete (Cat Off) ECU software that prevents the check-engine light and power loss on cars with a removed or replaced catalytic converter.
- Rear Lambda/O2 Sensor Delete Software that turns off monitoring of the post-cat (rear) oxygen sensor to prevent the check-engine light on downpipe and sports cat setups.
Legal notice: Software for emission systems (catalytic converter, DPF/FAP, OPF, EGR, AdBlue/SCR, etc.) is intended solely for track / motorsport and closed-course use. Driving vehicles with these systems disabled on public roads, and presenting them for TÜVTÜRK inspection, may be against regulations. On request, the original software can be restored.
Driving & Sound Effects
Make yourself heard and be first off the line.
- Pops & Bangs (Crackle Map) Popular The signature pops and crackles from the exhaust when you lift off the throttle — intensity set to your taste.
- Speed Limiter Removal Popular Software that removes or re-sets the electronically limited factory top speed (Vmax).
- Rev Limiter Adjustment Software that re-sets the engine's maximum rev limit while staying within mechanical limits.
Fault & Function Solutions
Permanent software fixes for annoying faults.
- Fault Code Deactivation Software that permanently disables unnecessary fault codes in the ECU for systems that have been removed or are no longer used.
- Permanent Start-Stop Delete A solution that permanently disables the start-stop system that switches itself on at every start, or makes it remember your last setting.
Stage 2 hardware, peace of mind and process
After Stage 1
Stage 2 is not listed for this engine
There's no meaningful Stage 2 figure for this engine; most of the gain comes with Stage 1 software. For livelier throttle response and a deeper intake sound, you can complement Stage 1 with the Custom Sport Filter Kit.
Included every time
Power with peace of mind
- Original software backup — the factory software is read and archived before the job.
- Reversal — the car can be returned to its original software whenever you ask.
- Datalog check — boost pressure, ignition and air/fuel ratio are recorded and checked on a road test.
- Vehicle-specific calibration — not an off-the-shelf file; tuned to the engine, hardware and fuel quality.
- Pre-tune diagnostics — fault memory is read and engine health is checked before the software.
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Book
Tell us about your car and your goals; we'll plan the day and time together.
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Analysis & backup
Fault memory is read, the ECU is identified and the original software is archived.
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Legend Tuned software
Calibration tailored to the car (Stage 1: ~1–2 hours).
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Test & handover
Verified with a road test + datalog, then handed over with a walkthrough of what was done.
Opel Astra J GTC / OPC
Other engines in the same generation
- Petrol 1.4 Turbo 140 → 165 HP +25
- Petrol 1.6 SIDI Turbo 170 → 200 HP +30
- Petrol 1.6 Turbo 180 → 210 HP +30
- Petrol 1.6 SIDI Turbo 200 → 240 HP +40
- Petrol 2.0 Turbo OPC 280 → 310 HP +30
- Diesel 1.7 CDTI 110 → 150 HP +40
- Diesel 1.7 CDTI 130 → 165 HP +35
- Diesel 1.6 CDTI 136 → 165 HP +29
- Diesel 2.0 CDTI 165 → 205 HP +40
- Diesel 2.0 BiTurbo CDTI 195 → 235 HP +40
Other Astra generations
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