BMW 3 Series · Stage 1
BMW 340i Stage 1 Remap
On BMW 340i turbo petrol engines a Stage 1 remap recalibrates the boost pressure, ignition timing, fuelling and torque limiter maps. No hardware is changed and the original software is backed up. The same engine is sold with different stock outputs across generations, so the gain depends on your version.
How much bhp does BMW 340i chip tuning add?
It depends on the generation and the stock output. 340i engines with 326 bhp reach 380–400 bhp with a Stage 1 remap; the largest gain is +74 bhp (F3x LCI 340i 326hp). Pick your version in the table below.
BMW 340i: Stage 1 figures by generation and year
Year / chassis: F3x LCI - 06 / 2015 - 2019
| Engine | Power | Torque | Gain |
|---|---|---|---|
| BMW 3 Series 340i 326hp | 326 → 400 bhp | 450 → 585 Nm | +74 bhp |
| BMW 3 Series 340i xDrive 326hp | 326 → 380 bhp | 450 → 520 Nm | +54 bhp |
Frequently asked questions
How much bhp does BMW 340i chip tuning add?
It depends on the generation and the stock output. 340i engines with 326 bhp reach 380–400 bhp with a Stage 1 remap; the largest gain is +74 bhp (F3x LCI 340i 326hp). Pick your version in the table below.
What is the difference between Stage 1 and Stage 2 on the BMW 340i?
Stage 1 is software only: no part of the car is changed and the figures in the table apply to this software. Stage 2 is software prepared for hardware changes such as the exhaust, intercooler or intake; the hardware comes first, then the software.
Will chip tuning damage the engine?
No. Values stay inside the safety margin the manufacturer leaves; engine, gearbox and turbo limits are not exceeded. Every file is verified with a road test and data logging. If the car needs maintenance first (worn injectors, blocked filter, weak clutch) we tell you before starting.
Will my fuel consumption go up?
With the same driving style it usually drops, because you hold the same speed at lower revs and less throttle. If you use the extra power, consumption naturally rises. It is down to your right foot.
How long does it take? Do I leave the car?
Most cars take 1–2 hours and you get the car back the same day; no need to leave it. Some models need the ECU removed, which takes longer — we tell you when booking.
Can I go back to stock later?
Yes. The original file is read and archived before any work. We restore the factory software free of charge whenever you ask.
Other engines and solutions for the BMW 3 Series
BMW 320d Stage 1
BMW 330d Stage 1
BMW 320i Stage 1
BMW 318d Stage 1
BMW 318i Stage 1
BMW 330i Stage 1
BMW 325d Stage 1
BMW 325i Stage 1
BMW 335d Stage 1
BMW 335i Stage 1
BMW 316d Stage 1
BMW 316i Stage 1
BMW 328i Stage 1
BMW M3 Stage 1
BMW 330e Stage 1
BMW 3 Series Pop & Bang tuning
BMW Stage 1 Chip Tuning