BMW Seria 3 E46 chiptuning

Chiptuning BMW Seria 3 330i 231 HP

BMW Seria 3 E46 (1998 - 2005) 330i, 231 HP and 300 Nm stock: after Stage 1, 251 HP and 320 Nm (+20 HP, +20 Nm), 1,499 RON final price, 1.5-2 hours, measured on the Bapro dyno in Brasov.

Power: stock231Stage 1251HP; +20 HP
Torque: stock300Stage 1320Nm; +20 Nm
E46 (1998 - 2005) · petrol

What are the figures based on?

The typical curve of the 330i engine, stock and Stage 1, over the range we measure on the dyno (from 3,000 rpm). Your own measurement is made at calibration, before and after. Drag the cursor on the chart to read the figures at a given rpm.

PowerTorquefaded lines: stock

Average values from repeated measurements on engines from the same family; yours is measured on the dyno, before and after. Catalogue updated on 20 October 2026.

What do you feel behind the wheel?

Linear acceleration
Power is delivered progressively and consistently, without flat spots or hesitation.
Performance you feel, not just measure
More power available instantly, for a more enjoyable drive.
Faster, safer overtaking
More torque at mid rpm: less time in the opposite lane.
Better consumption at the same driving style
More torque at the same rpm, for more efficient driving.

Have we measured a BMW Seria 3 before?

All measured cars →

Yes. Cars of the same model, measured on our dyno, stock and Stage 1:

What do BMW owners say?

All reviews on Google →

★★★★★
Daca as fi putut as fi dat 10 stele cu siguranta!! Mai mult decat profesionisti pot spune Andrei m-a ajutat cu Stage 1 la un BMW 520D DIN 157 CP AU IESIT 210 Dupa rezolvarea catorva mici probleme la masina cu ajutorul lui pot spune ca este cu totul alta masina si nu scoate fum!!!
Cristian Gabriel Vigheci · BMW 520D · Google
★★★★★
Am apelat la acest service pentru un Stage 1 pentru un BMW cu motorul 1.5 B38 si sunt extrem de multumit de rezultat. Diferenta de putere se simte imediat, iar masina livreaza resursele mult mai liniar fara a pune in pericol fiabilitatea motorului.. Pare a fi alta masina. Recomand cu incredere pentru profesionalism!
Lucian l · BMW · Google
★★★★★
BMW 320d GT Xdrive - Stage 1: 184.2 CP -> 219 CP 385 NM -> 462 NM Recomand serviciile AMC Motorsport!
Mircea Gaitan · BMW 320D · Google

How does it go?

You book online, with your car already filled in. At the workshop the car goes on the dyno as it is: first measurement and full diagnostics. We write the calibration for your engine, within its limits, then the second measurement. You leave with the chart of the two curves overlaid. 1.5-2 hours, in Brasov, Str. Carpatilor 60. The original software stays in our archive with no time limit. How a dyno test goes, with a real chart →

Frequently asked questions

How long does chiptuning take for the BMW · 330i 231 HP?

On average 1.5-2 hours, including diagnostics and the dyno measurement before and after. Reading and writing through OBD (the diagnostic port) is the usual route. When the ECU has to be read on the bench or unlocked, it can take longer; we tell you when you book.

What warranty does AMC Motorsport give for the installed software on the BMW · 330i 231 HP?

AMC Motorsport gives 24 months of technical support for the installed software and stands behind the calibration it made. Any non-conformity directly related to the software we installed is analysed and, if needed, corrected at no extra cost. Support can include re-analysing the installed file, checking operating parameters through diagnostics and/or logging, software corrections or a return to the original version, when this is justified and technically possible. Support covers only the software installed by AMC Motorsport and is not a warranty for the mechanical, electrical or electronic components of the vehicle.

Does the car pass the periodic technical inspection (ITP) after a remap?

A correctly calibrated Stage 1 keeps emissions within the limits needed to pass the ITP. Our calibration keeps the exhaust after-treatment systems fully working. The engine must be in good mechanical condition: an engine with existing problems can fail the emissions test whether it is stock or modified.

Stage 1 or Stage 2: which suits my car?

On the BMW 330i 231 HP, Stage 1 means software only, on stock parts: from 231 to 251 HP, an average value from repeated dyno measurements. Stage 2 needs hardware changes, usually a sports downpipe and an improved intake, and adds a further 10-15% over Stage 1. Projects beyond Stage 2 (a bigger turbo, intercooler, fuelling) are discussed individually.

Does fuel consumption drop after a remap?

Yes, with a normal driving style. The extra torque at low rpm means better efficiency; many diesel engines with Stage 1 show 0.3-0.8 l/100 km less in mixed driving. With a sportier driving style, consumption can go up. If lower consumption is your main goal, Eco tuning is calibrated for economy: 8-15% on diesel and 5-10% on turbo petrol.

If I have an automatic gearbox, does it need a remap too?

Stage 1 on the engine works perfectly without TCU tuning, exactly as we deliver it. Gearbox tuning is the next step, an upgrade of the driving experience: faster shifts, a more direct response, a Sport mode that holds boost better. If you have Stage 1 and want to take it further, gearbox tuning is the most enjoyable improvement you can add. It does not fix anything; it raises the experience to a higher standard.

ECU remap BMW Seria 3 330i 231 HP

For the BMW Seria 3 330i 231 HP, AMC Motorsport offers chiptuning and ECU remapping developed individually on its own dyno. The Stage 1 calibration takes the engine to 251 HP and 320 Nm, keeping the reliability of the original components.

AMC Motorsport is a workshop in Brasov specialising in chiptuning and ECU remapping since 2009, for diesel and petrol engines. We have developed and measured on the dyno thousands of calibrations for a wide range of makes and engines, with Stage 1 solutions developed individually. The aim is a real increase in power and torque, with the reliability and refinement you would expect from a professional calibration.

Stage 1, chiptuning, ECU remapping or ECU tuning: what is the difference?

They all describe the same service, only the term is different:

Chiptuning: the established term from the 1990s, when the memory chips in the engine computer were physically replaced.
ECU remapping or ECU tuning: the modern technical name, because the maps in the engine control unit are recalibrated.
Resoftare or softare: the terms most often used in Romania for the same work.
Stage 1: the international standard for optimising the software on fully original hardware.

What does a properly done Stage 1 involve?

It is more than raising a few values in the software. It means recalibrating the engine's control strategies so that it makes better use of the margin left by the factory: torque request and management, internal limiters, boost pressure, injection quantity and strategy, timing, pedal response and protection strategies. All of these work together; what matters is not only how much power you get, but how it is delivered.

How we work on the BMW 330i

We check the technical condition and the original software, develop the calibration for this engine, measure it on the dyno and analyse how it behaves under load. The result is a car that responds more readily and pulls more flexibly when accelerating, picking up speed and overtaking, with no mechanical modifications and with the power delivered in a controlled, sustained way.

Other engines Seria 3 E46 (1998 - 2005)

318d 115 HP 320d 128 HP 320d 136 HP 320d 150 HP 330d 184 HP 325i 192 HP 330d 204 HP M3 343 HP

Stage 1, final price1,499 RON

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