Chiptuning BMW 1 Series F20 (2011–2019)
25 engines · +24 to +80 hp
BMW 1 Series F20: 25 engines — 11 petrol and 14 diesel. The gain is +24 to +80 hp, with up to +113 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR.
All BMW 1 Series F20 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 · 14 engines | ||||
| 125d 03/2015->224 hp / 450 Nm | +62 hp+113 Nm |
GTL — 249 EUR · 277 hp GT — 399 EUR · 286 hp |
Select → | |
| 125d211 hp / 450 Nm | +59 hp+113 Nm |
GTL — 249 EUR · 261 hp GT — 399 EUR · 270 hp |
Select → | |
| 120d200 hp / 420 Nm | +56 hp+108 Nm |
GTL — 249 EUR · 248 hp GT — 399 EUR · 256 hp |
Select → | |
| 120d163 hp / 340 Nm | +47 hp+93 Nm |
GTL — 249 EUR · 203 hp GT — 399 EUR · 210 hp |
Select → | |
| 116d Efficient Dynamics116 hp / 260 Nm | +35 hp+77 Nm |
GTL — 219 EUR · 146 hp GT — 329 EUR · 151 hp |
Select → | |
| 120d190 hp / 400 Nm | +35 hp+105 Nm |
GTL — 249 EUR · 220 hp GT — 399 EUR · 225 hp |
Select → | |
| 116d 03/2015->116 hp / 270 Nm | +34 hp+78 Nm |
GTL — 219 EUR · 145 hp GT — 329 EUR · 150 hp |
Select → | |
| 118d143 hp / 320 Nm | +34 hp+85 Nm |
GTL — 219 EUR · 172 hp GT — 329 EUR · 177 hp |
Select → | |
| 120d184 hp / 380 Nm | +34 hp+101 Nm |
GTL — 249 EUR · 213 hp GT — 399 EUR · 218 hp |
Select → | |
| 118d 03/2015->150 hp / 320 Nm | +30 hp+91 Nm |
GTL — 249 EUR · 176 hp GT — 399 EUR · 180 hp |
Select → | |
| 114d95 hp / 235 Nm | +29 hp+71 Nm |
GTL — 219 EUR · 119 hp GT — 329 EUR · 124 hp |
Select → | |
| 125d218 hp / 450 Nm | +27 hp+113 Nm |
GTL — 249 EUR · 241 hp GT — 399 EUR · 245 hp |
Select → | |
| 116d116 hp / 260 Nm | +24 hp+81 Nm |
GTL — 219 EUR · 136 hp GT — 329 EUR · 140 hp |
Select → | |
| 118d136 hp / 300 Nm | +24 hp+80 Nm |
GTL — 219 EUR · 156 hp GT — 329 EUR · 160 hp |
Select → | |
| Petrol · 11 engines | ||||
| M135i 03/2015->326 hp / 450 Nm | +80 hp+113 Nm |
GTL — 279 EUR · 394 hp GT — 459 EUR · 406 hp |
Select → | |
| M 135i320 hp / 450 Nm | +79 hp+113 Nm |
GTL — 279 EUR · 387 hp GT — 459 EUR · 399 hp |
Select → | |
| M140i340 hp / 500 Nm | +76 hp+100 Nm |
GTL — 279 EUR · 405 hp GT — 459 EUR · 416 hp |
Select → | |
| 125i224 hp / 310 Nm | +62 hp+113 Nm |
GTL — 249 EUR · 277 hp GT — 399 EUR · 286 hp |
Select → | |
| 135i 03/2011-> (sensor1)306 hp / 400 Nm | +52 hp+68 Nm |
GTL — 279 EUR · 349 hp GT — 459 EUR · 358 hp |
Select → | |
| 135i 03/2011-> (sensor2)306 hp / 400 Nm | +52 hp+68 Nm |
GTL — 279 EUR · 349 hp GT — 459 EUR · 358 hp |
Select → | |
| 120i184 hp / 270 Nm | +42 hp+80 Nm |
GTL — 249 EUR · 220 hp GT — 399 EUR · 226 hp |
Select → | |
| 118i (1499 ccm)136 hp / 220 Nm | +40 hp+66 Nm |
GTL — 219 EUR · 170 hp GT — 329 EUR · 176 hp |
Select → | |
| 120 i (1598 ccm)177 hp / 250 Nm | +37 hp+53 Nm |
GTL — 249 EUR · 209 hp GT — 399 EUR · 214 hp |
Select → | |
| 116i109 hp / 180 Nm | +32 hp+52 Nm |
GTL — 219 EUR · 136 hp GT — 329 EUR · 141 hp |
Select → | |
| 114i102 hp / 180 Nm | +30 hp+52 Nm |
GTL — 219 EUR · 128 hp GT — 329 EUR · 132 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:
BMW 1 Series F20 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
- +80 hpbest in this generation
M135i 03/2015-> 326 hp → 406 hp. The other engines gain at least +24 hp; check the table for each one.
- +113 Nmfor diesels
Diesels gain mostly torque: +71 to +113 Nm, which helps with overtaking and towing.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
What makes the BMW 1 Series F20 special
BMW 1 Series F20 remap: the March 2015 facelift is the dividing line
The F20 is the five-door 1 Series built from June 2011 to June 2019; the three-door car is the F21. In Britain the facelift is usually called the LCI, and the badges run from the 114d and 116d through the 120d and 125i to the M135i and M140i. Do not confuse it with the F70, the 1 Series from 2024, which is a separate generation. Because the engines changed with the March 2015 facelift, the build date decides which tuning box suits an F20. Pre-facelift petrol cars have the N13 or N20 (the N55 in the M135i), and the diesels have the N47.
The B38 and B48 petrols and the B47 and B37 diesels arrived from 2015, replacing the N-series engines gradually until the last N13, N20 and N55 cars went in 2016. The 120d moved up from 184 hp and 380 Nm to 190 hp and 400 Nm, and the 118d from 143 hp to 150 hp. The 125d went from 218 hp to 224 hp, both at 450 Nm, and the later car was offered only with the eight-speed automatic. The M135i made 320 hp and later 326 hp, and in July 2016 the M140i arrived with the B58 engine and 340 hp.
What the GAN GT does for the 120d
A 120d rated at 190 hp and 400 Nm reaches 225 hp and 505 Nm with the GAN GT. If your diesel F20 mostly does short urban trips, remember that DPF regeneration can be difficult in that kind of use. That is the stated gain for this engine type, not a dyno reading from your own BMW.
BMW 1 Series F20 remap: common questions
Does the N47 timing chain matter on a 118d or 120d before you fit a tuning box?
On the N47 the timing chain is at the rear of the engine, and a rattle is the warning sign. Have it inspected from about 100 thousand km onwards; chain failures are a known issue on BMW diesels built up to 2015. From March 2015 the B47 took over, and it is a different engine.
BMW 118d remap: stage 1 or a tuning box?
Stage 1 normally refers to a software change, in which a flash remap replaces the factory software inside the engine control unit. The GAN tuning box never replaces that software. The ECU software is never changed and the module can be removed at any time, so your manufacturer's warranty is preserved.
My F20 116i makes 109 hp: is it the older 136 hp engine?
No. The 136 hp 116i with the 1.6-litre N13 was built until January 2015. That earlier N13 is the one with timing-chain concerns and faults in the water pump, thermostat housing and expansion tank, so its history matters. Since the facelift the 116i has the 1.5-litre three-cylinder B38 with 109 hp and 180 Nm, and that is the engine in the catalogue.
Will my insurer need to know about the tuning box?
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.