BMW BMW M140i / 440i

PERON Stage 1 ECU Tune | xHP Stage 3 TCU Tune | BMW M140i / 440i B58

Regular price £750.00 GBP ex vat

Wish to discuss your performance goals with our in-house calibration team or book a tuning slot?

Product Details

  • Type Tuning Calibration (ECU)
  • Peak Power 357 to 432 bhp
  • Peak Torque 415 to 466 ft-lb
  • Engine B58
  • ECU Type Bosch MG1CS003
  • Dynograph Download

PERON Tuning Stage 1 ECU & TCU Calibration for BMW B58 (M140i / 440i)

At PERON Automotive, our Stage 1 ECU and TCU calibration package for the BMW B58-powered M140i and 440i is the result of extensive development both in-house and with our global partners. The B58 engine offers an excellent base, and our calibration enhances its performance while maintaining the refined, OEM-like driveability that makes these models so enjoyable.


Performance and Driveability


Our B58 Stage 1 calibration raises power from stock to 420hp-435hp and torque from stock to 455lb-ft - 470lb-ft on 99 RON fuel, delivering stronger mid-range pull and improved top-end performance. The calibration has been engineered for smooth torque delivery and excellent throttle control, making it equally at home on the daily commute or the weekend blast.


ZF8 Gearbox Calibration via xHP

To complement the ECU calibration, we also provide a TCU tune using xHP software, specifically tailored for the ZF8 automatic transmission. This transforms shift behaviour with:

  • Faster, more responsive gear changes

  • Optimised torque converter lock-up

  • Improved shift logic in manual and sport modes

  • Raised torque limits for tuned power levels

The result is a gearbox that feels sharper, more intuitive, and fully in sync with the upgraded engine performance.


Fuel Requirements

The Stage 1 tune is optimised for 99 RON fuel, though it remains compatible with 97–98 RON. It delivers performance gains without compromising fuel economy or daily usability.


Hardware Recommendations

  • OEM BMW B58 spark plugs (recommended if not recently replaced)

  • Performance panel air filter + Intake hose (optional but beneficial)


Tuning Highlights

ECU:

  • Refined torque and load management

  • Enhanced boost control for quicker spool

  • Optimised fuel delivery and injection timing

  • Lambda and AFR calibration for power and efficiency

  • Advanced ignition timing for safe, high-performance output

  • Optional raised rev limiter for enhanced exhaust sound

  • Extensive development of throttle calibration for a smooth and linear response

TCU (xHP):

  • Recalibrated shift points and strategies

  • Improved gear holding in sport/manual modes

  • Increased shift speed and reduced lag

  • Enhanced drivability across all driving scenarios

 

Porsche 991.2 GT3 RS on the in-house Dynojet 424x Linked Dyno Cell, featuring Akrapovic exhaust during performance testing and tuning by PERON Automotive.

Why PERON Tuning?

PERON Tuning represents the research and development arm of PERON Automotive Ltd., founded on a vision to set new standards in performance engineering. Spearheaded by Charlie Orpen, this journey has brought together one of the UK’s premier aftermarket facilities with a team of top-tier talent, uniting software and hardware under one roof to ensure quality control from start to finish. Charlie is joined by two of the industry’s finest engineers: Nicholas Kasberger, renowned for his expertise in reverse engineering and ECU calibration, and James Howarth, a leader in hardware design, fabrication, and turbo hardware.

Operating from a state-of-the-art facility equipped with a dyno cell, CNC machining, tool manufacturing, and robotic welding, PERON Tuning delivers market-ready calibration solutions and turbo hardware that empower hundreds of dealers worldwide. With a combined 50 years of experience—half of it spent supporting high-volume calibrations behind the scenes—PERON Tuning’s focus has always been on Porsche and Volkswagen Audi Group applications. While contractual private label agreements have limited what could be shared publicly, PERON Tuning now uses this platform to showcase their journey, offering exclusive insights into daily development case studies.