Vauxhall Astra 1.8i 16v 140bhp tuning file
(H) (2004–2009) · Petrol · ECU: Siemens/Continental SIMTEC 75.1
Stage 1 remap: +10 bhp & +15 Nm
ECU
Read methods
Available solutions
With a bespoke remap the Vauxhall Astra 1.8i 16v 140bhp gains +10 bhp and +15 Nm, rising from 140 bhp / 175 Nm to 150 bhp / 190 Nm (7% more power). We build each tuning file around the software number of your read on the Siemens/Continental SIMTEC 75.1, so nothing generic goes back into the car. Add DPF / EGR solutions to the same file if needed.
Who is this remap for?
Naturally aspirated petrol engines gain less than turbo engines, but a remap still improves throttle response and smooths out flat spots in the power delivery. 140 → 150 bhp equals roughly 104 → 112 kW.
Figures are guide values from our rolling road and comparable vehicles. Results depend on the vehicle's condition, hardware and fuel quality. Remapping in the UK: let your insurer know about the modification. DPF, EGR and AdBlue solutions are supplied for off-road and motorsport use only and are not legal for use on UK roads.
Engine specification
| Fuel type | Petrol |
| Engine size | 1796 CC |
| Compression ratio | 10.5 : 1 |
| Bore × stroke | 80.5 X 88.2 mm |
| Engine code | Z18XER |
Other Vauxhall Astra (H) (2004–2009) engines
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