BMW

BMW M3 E46 - 1998 - 2005 M3 343hp

PetrolCode: 326S43246 ccPremium fuel

Performance

Stock vs tuned

All gains based on tested files written by professional calibrators.

Stock

343hp
365nm

Stage 1

365hp+22
390nm+25

Stage 2

375hp+32
400nm+35

Power and torque

Peak figures from our records. Curve shape is modelled, not a dyno trace.

Extra options

Pop & Bang Crackle mapVmaxDTC RemovalDECATFLAPS

ECU

Compatible ECUs

Siemens/Continental MSS52

Manufacturer: Siemens/Continental

Type: MSS52

Siemens/Continental MSS54

Manufacturer: Siemens/Continental

Type: MSS54

Specifications

Technical data

Displacement
3246 cc
Engine code
326S4
Bore
87.00 mm
Stroke
91.00 mm
Compression
11.50
Turbo type
Fuel
Petrol
Premium fuel
Required

Tuning file for BMW M3 E46 - 1998 - 2005 M3 343hp

ECU tuning files for the BMW M3 E46 - 1998 - 2005 M3 343hp are written and tested by professional calibrators. Each chiptuning file (Stage 1, Stage 2 and additional services like DPF OFF, EGR OFF and AdBlue removal) is programmed using the latest software and validated through years of remapping experience on the BMW M3 platform.

Bee Chiptuning specializes in custom ECU remapping for BMW vehicles. Every tuning file we deliver is designed for the best performance gains with a real safe margin remap that respects the limits of your hardware. Whether you want more horsepower, more torque, improved throttle response or better fuel economy, our dyno-tested calibrations deliver consistent and repeatable results on the M3 343hp.

Our benefits

  • Files written by professional calibrators
  • Dyno-tested before delivery
  • Stage 1 and Stage 2 calibrations
  • Delivered in less than an hour
  • Direct support via WhatsApp

Ready to tune?

Sign up and upload your original file.

You'll receive a tested ECU file for this exact engine in less than an hour. Free credit on registration, no card needed.