BMW 3-serie 30i 231 hp — Stage 1 file (+19 hp)

or choose step by step
1
Choose a vehicle type

Chip tuning for BMW 3-serie 30i 231 hp ECU

BMW 3-serie (1998 - E46) 30i 231 hp — premium petrol engine of the passenger segment of the BMW Group (Mini, Rolls-Royce, BMW Motorrad) group (Германия, 1916). Stage 1 chip tuning raises power from 231 to 250 hp (+19 hp, +8%) and torque from 300 to 325 Nm (+25 Nm). This engine ships with different ECU variants: Siemens/Continental MS43, Siemens/Continental MSS45. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 2 configurations · 2 ECU variants. The 1998 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.

xDrive all-wheel drive is BMW's signature system. On older-generation BMW petrol engines, Stage 1 goes in over OBD without Bench. Third-party flash platforms are an industry of their own for the BMW community. High-output BMW turbo petrol engines deliver a solid gain with Stage 1 on stock hardware.

The BMW community is renowned for active tuning and a large pool of available Stage files. Stage 1 on BMW usually stays within the standard timeframe, with no particular difficulty on the standard models. The BMW premium segment is a high-output platform with Stage 2 potential. The hardware headroom allows a confident move to Stage 1 without changing the turbo. High-output engines deliver a solid gain with Stage 1 on stock hardware.

Frequently asked questions

What is the Stage 1 effect on the BMW 3-serie 30i 231 hp?

The Stage 1 gain for the BMW 3-serie 30i 231 hp is 19 hp (+8%) over the stock 231 hp, for a total of 250 hp. Torque rises from 300 to 325 Nm (+25 Nm).

What is Stage 1 chip tuning for the BMW 3-serie?

Stage 1 chip tuning of the BMW 3-serie is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +19 hp with no hardware changes.

Is Stage 1 safe on the high-output BMW 3-serie 30i 231 hp?

The high-output BMW 3-serie 30i 231 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.

How much does Stage 2 add on the BMW 3-serie?

Stage 2 on the BMW 3-serie 30i 231 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Which ECUs are found on the BMW 3-serie 30i 231 hp?

The BMW 3-serie 30i 231 hp was fitted with different ECUs depending on the year and trim: Siemens/Continental MS43, Siemens/Continental MSS45. The write method (OBD, Bench, Boot) is determined when the unit is read.

What happens to the BMW 3-serie warranty after chip tuning?

The factory warranty of the BMW 3-serie does not remain valid after Stage 1 — the manufacturer withdraws its obligations once the ECU software is changed. CHIPOK provides its own warranty on its work and support.

How long does remapping the BMW 3-serie take?

On the BMW 3-serie 30i 231 hp: OBD flash 25-30 minutes, Bench (if required) about an hour. The file processing itself takes 5-30 minutes once the original bin is received.

Is the original file kept when chip tuning the BMW 3-serie?

Yes, the original ECU firmware of the BMW 3-serie 30i 231 hp is kept and can be flashed back at any time. Returning to stock via OBD takes 25-30 minutes.

What is the price of a Stage 1 remap for the BMW 3-serie?

Stage 1 for the BMW 3-serie 30i 231 hp is paid for with CHIPOK credits (1 cr = 1 €). The final amount is set in the calculator, taking the extra options (off functions) into account.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno