Chiptuning Opel Astra J (2009–2017)
26 engines · +12 to +56 hp
Opel Astra J: 26 engines — 11 petrol and 15 diesel. The gain is +12 to +56 hp, with up to +105 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All Opel Astra J engines: exact gains
Standard output, output with GAN, the gain and the price for each box. Diesel and petrol engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Diesel · 15 engines | ||||
| 2.0 CDTI BiTurbo194 hp / 400 Nm | +55 hp+105 Nm |
GTL — 249 EUR · 241 hp GT — 399 EUR · 249 hp |
Select → | |
| 2.0 CDTI ecoFlex165 hp / 350 Nm | +47 hp+95 Nm |
GTL — 249 EUR · 205 hp GT — 399 EUR · 212 hp |
Select → | |
| 2.0 CDTI ECOTEC160 hp / 350 Nm | +46 hp+95 Nm |
GTL — 249 EUR · 199 hp GT — 399 EUR · 206 hp |
Select → | |
| 1.6 CDTI ecoFLEX136 hp / 320 Nm | +40 hp+89 Nm |
GTL — 219 EUR · 170 hp GT — 329 EUR · 176 hp |
Select → | |
| 1.7 CDTI ecoFlex (sensor1)131 hp / 300 Nm | +39 hp+85 Nm |
GTL — 219 EUR · 164 hp GT — 329 EUR · 170 hp |
Select → | |
| 1.7 CDTI ecoFlex (sensor2)131 hp / 300 Nm | +39 hp+85 Nm |
GTL — 219 EUR · 164 hp GT — 329 EUR · 170 hp |
Select → | |
| 1.7 CDTI ECOTEC (sensor1)125 hp / 280 Nm | +37 hp+81 Nm |
GTL — 219 EUR · 156 hp GT — 329 EUR · 162 hp |
Select → | |
| 1.7 CDTI ECOTEC (sensor2)125 hp / 280 Nm | +37 hp+81 Nm |
GTL — 219 EUR · 156 hp GT — 329 EUR · 162 hp |
Select → | |
| 1.6 CDTI ecoFLEX110 hp / 300 Nm | +33 hp+85 Nm |
GTL — 219 EUR · 138 hp GT — 329 EUR · 143 hp |
Select → | |
| 1.7 CDTI ECOTEC (sensor1)110 hp / 260 Nm | +33 hp+81 Nm |
GTL — 219 EUR · 138 hp GT — 329 EUR · 143 hp |
Select → | |
| 1.7 CDTI ECOTEC (sensor2)110 hp / 260 Nm | +33 hp+81 Nm |
GTL — 219 EUR · 138 hp GT — 329 EUR · 143 hp |
Select → | |
| 1.7 CDTI (sensor1)101 hp / 240 Nm | +30 hp+72 Nm |
GTL — 219 EUR · 127 hp GT — 329 EUR · 131 hp |
Select → | |
| 1.7 CDTI (sensor2)101 hp / 240 Nm | +30 hp+72 Nm |
GTL — 219 EUR · 127 hp GT — 329 EUR · 131 hp |
Select → | |
| 1.3 CDTI95 hp / 190 Nm | +29 hp+63 Nm |
GTL — 219 EUR · 120 hp GT — 329 EUR · 124 hp |
Select → | |
| 2.0 CDTI131 hp / 300 Nm | +16 hp+36 Nm |
GA — 189 EUR · 147 hp GA+ — 189 EUR · 147 hp |
Select → | |
| Petrol · 11 engines | ||||
| 1.6 SIDI Turbo EcoFlex200 hp / 280 Nm | +56 hp+85 Nm |
GTL — 249 EUR · 248 hp GT — 399 EUR · 256 hp |
Select → | |
| 1.6 Turbo ECOTEC179 hp / 230 Nm | +51 hp+69 Nm |
GTL — 249 EUR · 222 hp GT — 399 EUR · 230 hp |
Select → | |
| 1.6 SIDI Turbo EcoFlex170 hp / 260 Nm | +48 hp+81 Nm |
GTL — 249 EUR · 211 hp GT — 399 EUR · 218 hp |
Select → | |
| 2.0 Turbo OPC280 hp / 400 Nm | +48 hp+68 Nm |
GTL — 249 EUR · 319 hp GT — 399 EUR · 328 hp |
Select → | |
| 1.4 Turbo ECOTEC140 hp / 200 Nm | +41 hp+60 Nm |
GTL — 219 EUR · 175 hp GT — 329 EUR · 181 hp |
Select → | |
| 1.4 Turbo ECOTEC120 hp / 200 Nm | +36 hp+60 Nm |
GTL — 219 EUR · 151 hp GT — 329 EUR · 156 hp |
Select → | |
| 1.6 ECOTEC Direct Injection Turbo ecoFLEX170 hp / 280 Nm | +36 hp+59 Nm |
GTL — 249 EUR · 201 hp GT — 399 EUR · 206 hp |
Select → | |
| OPC 2.0T280 hp / 400 Nm | +22 hp+32 Nm |
GA — 199 EUR · 302 hp GA+ — 199 EUR · 302 hp |
Select → | |
| 1.8i140 hp / 175 Nm | +17 hp+21 Nm |
GA — 189 EUR · 157 hp GA+ — 189 EUR · 157 hp |
Select → | |
| 1.6i115 hp / 155 Nm | +14 hp+19 Nm |
GA — 189 EUR · 129 hp GA+ — 189 EUR · 129 hp |
Select → | |
| 1.4i100 hp / 130 Nm | +12 hp+16 Nm |
GA — 189 EUR · 112 hp GA+ — 189 EUR · 112 hp |
Select → | |
Each engine has its own tuning box: GAN GT / GTL or GAN GA / GA+. Prices are per box and include the current discount.
Not sure which engine you have?
The badge alone is not enough: in this generation, the same engine designation came in different power outputs, each with its own calibration. Check the power output in your registration document and find the matching row.
Same badge, different factory power outputs in this generation:
Opel Astra J remap: what changes
The GAN box plugs in between the sensors and the engine control unit (ECU) and adjusts their signals, while a flash remap rewrites the ECU itself. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the box can be removed at any time.
- Bluetoothchange modes from your phone
- 18 mapsfine-tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +56 hpbest in this generation
1.6 SIDI Turbo EcoFlex 200 hp → 256 hp. The other engines gain at least +12 hp; check the table for each one.
- +105 Nmfor diesels
Diesels gain mostly torque: +36 to +105 Nm, which helps with overtaking and towing.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 3 naturally aspirated engines: GAN GA / GAN GA+ tuning boxes; check the table for each engine’s figure.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
What makes the Opel Astra J special
Vauxhall Astra J remap: six engines behind one “1.6”
Which 1.6 does your Astra J have? The engine code, not the figure on the badge, decides how an Astra J is tuned. On a Vauxhall Astra 1.6 remap the badge could mean any of six engines. The A16XER, 115 hp, has no turbocharger and a timing belt, which makes the GAN GA+ its box. Among the turbo petrols are the A16LET (179 hp, built until November 2012), the A16XHT (170 hp) and the A16SHT (200 hp). The 1.6 SIDI Turbo is direct-injection, and the 200 hp version is the three-door GTC's.
The 1.6 CDTI is a turbodiesel with 110 and 136 hp, offered from May 2014. The GAN GT covers those turbo petrols and the 1.6 CDTI. It also covers the older 1.7 CDTI with 110, 125 and 131 hp and the 1.4 Turbo with 120 and 140 hp. In Britain this is the Vauxhall Astra, known as the Mk6 as well as the J, and sold as a hatchback, Sports Tourer estate, GTC coupe and VXR. On a 1.6 CDTI, a cold-start chain rattle and a clogged DPF after short trips are the two things to settle before you add torque. If your Astra has the M32 six-speed manual, listen for whine in the higher gears before you add torque.
Body styles and the facelift
Astra J sales began on 4 December 2009 with the five-door hatchback. The Sports Tourer followed in November 2010 and the three-door GTC in January 2012. The saloon and the facelift both arrived in September 2012.
What Opel Astra owners say about GAN
In general, I liked everything!! At least according to my personal feelings this device corresponds to the declared characteristics Good device, and you do not need to buy another device for another car.
Opel Astra J remap: common questions
Vauxhall Astra GTC remap: what does the GAN GT give the 1.6 SIDI Turbo with 200 hp?
The catalogue lists this engine at 200 hp and 280 Nm, and at 256 hp and 365 Nm with the GAN GT. On turbocharged engines the GAN GT adds up to 30% more power. The performance model is badged Astra VXR in Britain and OPC elsewhere; its 2.0 Turbo makes 280 hp, and the catalogue gain with the GAN GT is 48 hp. Treat both as catalogue figures for the engine type; neither is a dyno measurement of your own car.
Which GAN box fits the 115 hp 1.6 in the Astra J?
The A16XER, with 115 hp and 155 Nm, is listed at 129 hp and 174 Nm with the GAN GA+.
How do I tell the 110 hp 1.6 CDTI from the 136 hp one?
The 110 hp version makes 300 Nm and the 136 hp version 320 Nm. The catalogue gain with the GAN GT is 33 hp on the 110 hp version and 40 hp on the 136 hp one.
Does a GAN tuning box affect my car insurance?
Tell them. A tuning box raises the output, and in Britain that is a declarable modification like any other performance change. Policies differ, so a quick call to your insurer before fitting is the safe route; the figures they will ask for are the stock and GAN outputs listed here.
Is a tuning module the same as a Stage 1 remap?
Not quite. Stage 1 usually means an ECU remap without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.