Chiptuning BMW 3 Series E36 (2000)
3 engines · +17 to +23 hp
BMW 3 Series E36: 3 engines — 3 petrol. The gain is +17 to +23 hp, with up to +34 Nm more torque. GAN GA+ from 189 EUR.
All BMW 3 Series E36 engines: exact gains
Standard output, output with GAN, the gain and the price for each box.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Petrol · 3 engines | ||||
| 328i190 hp / 280 Nm | +23 hp+34 Nm |
GA — 189 EUR · 213 hp GA+ — 189 EUR · 213 hp |
Select → | |
| 320i150 hp / 190 Nm | +18 hp+23 Nm |
GA — 189 EUR · 168 hp GA+ — 189 EUR · 168 hp |
Select → | |
| 318is138 hp / 180 Nm | +17 hp+22 Nm |
GA — 189 EUR · 155 hp GA+ — 189 EUR · 155 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?
Find your engine by the power output in your registration document: each version has its own module calibration.
BMW 3 Series E36 remap: what changes
More power and torque without rewriting the ECU or swapping any parts. The GAN box only adjusts the engine sensor signals. 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
- +23 hpbest in this generation
328i 190 hp → 213 hp. The other engines gain at least +17 hp; check the table for each one.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- 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 3 Series E36 special
BMW E36 remap for a rear-wheel-drive car
Rear-wheel drive makes the BMW E36 a regular sight at track days. In Britain it is simply the 3 Series, known to enthusiasts as the E36, and it was sold as a Saloon, Coupé, Touring and Convertible under badges such as 316i, 318i and 323i. The engine decides which tuning box fits an E36, and the catalogue lists three naturally aspirated petrol engines. Production ran from 1990 to 2000, and the 2000 in the catalogue name marks the end of the Compact rather than the start of the car.
A 320i has 150 hp and 190 Nm either way: the M50 was fitted until 1995 and the M52 from 1994. The 328i, from January 1995, runs the M52 and makes 280 Nm. On the 318is, the 1.9-litre M44 of 1996 onwards makes 180 Nm, against 175 Nm for the 1.8-litre M42 it replaced.
BMW 320i remap: the GAN GA+ figures
With the GAN GA+, the 320i goes from 150 hp and 190 Nm to 168 hp and 213 Nm. These are the stated gains for this engine type, not a dyno reading from your own car.
BMW 3 Series E36 remap: common questions
What does the GAN GA+ add to an E36 320i or 328i for track days?
The GAN GA+ is rated at up to 12% more power on a naturally aspirated four- or six-cylinder engine.
Do the Nikasil bores of the early E36 M52 sixes matter?
On M52 sixes built between 1994 and 1998, the Nikasil bore coating can wear if the engine runs on high-sulphur fuel. BMW then switched to iron cylinder liners, and the later M52TÜ is free of the problem. The M50 in the 320i and 325i before 1995 has nothing to do with it.
E36 tuning box or flash remap: what is the difference?
The GAN box sits between the engine sensors and the ECU and adjusts the signals they send, so the factory software is left as it is. A flash remap works the other way round and rewrites that software. The GAN box comes off in about a minute, with nothing written to the ECU.
Do I need to tell my insurer about a GAN tuning box?
Yes, declare it. British insurers treat extra power as a modification, so the safe course is to tell them before you fit the box. How they treat it varies from one insurer to another, so ask before you fit the box; the standard and tuned figures you will be asked for are in the table on this page.
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.