Unleash Your Engine's True Potential with the BossECU BMW M5.2
Transform your BMW with the BossECU BMW M5.2, a fully plug-and-play standalone ECU developed for BMW M44B19, M62B35 and M62B44 engines equipped with original wiring harnesses.
| Engine | Cars |
|---|---|
| M44B19 (19 4S 1) | 96-00 E36 318i (North America) 96-00 E36 318is 96-00 E36 318ti |
| M62B35 (35 8S 1) | 96-98 E38 735i 96-98 E39 535i |
| M62B44 (44 8S 1) | 97-99 E31 840Ci 96-98 E38 740i 96-98 E39 540i |
Perfect for enthusiasts and professional tuners, this ECU delivers modern technology, precise tuning, competition-grade performance, and advanced features - all without cuts, conversions, or reconditioning of the original wiring harness.
🚗 Key Features at a Glance
✅ Plug & Play - Connects directly to your wiring harness – no modifications needed.
✅ 32x32 Maps - Ultra-precise tuning for maximum power and efficiency.
✅ Engine Load - Support for MAF, MAP (recommended), or TPS for total flexibility.
✅ Integrated Wideband - LSU 4.9 controller for real-time air-fuel ratio tuning.
✅ Coil-on-Plug - Upgrade to individual coils for a faster, more reliable response.
✅ Competition Ready - Includes launch control, anti-lag, and boost by gear shift.
✅ Full Protections - Safeguards your engine with AFR control, oil pressure, and boost cut.
Why Choose the BossECU BMW M5.2?
The BossECU BMW M5.2 is the ultimate solution to unlock the potential of BMW M44B19, M62B35 and M62B44 engines. With immediate installation and advanced features, it saves you from costly upgrades and typical ECU conversions. Ideal for beginners and experienced tuners, it offers full control without compromising your BMW's reliability.
🔥 Detailed Features for All Tuners
Precise Tuning
- VE-Based Fueling: 32x32 maps with AFR target tables for total control.
- Real-Time Tuning: Use TunerStudio for live adjustments.
- Closed-Loop Wideband: Automatically corrects fuel with an integrated LSU 4.9 sensor.
- Engine Protections: AFR deviation, oil pressure, rev limiter, and boost cut.
- Knock Monitor: Audio output to detect and prevent detonation.
Competition Performance
- Launch Control & Anti-Lag: Dominate the track with perfect starts and constant turbo pressure.
- Boost by Gear Shift: Optimizes turbo performance for each gear change.
- Flat Shift, Nitro, and Staged Injection: Prepared for advanced competition setups.
- Barometric Correction: Automatically adjusts to altitude and weather conditions.
Advanced Inputs/Outputs
- 14x Analog Inputs: Monitors pressure, temperature, and knock sensors.
- 24x Low-Side Outputs: Controls injectors, solenoids, and other components.
- Drive-by-Wire Support: Adds electronic throttle with an optional module.
✅ Tested Engines
| Engine | Car | Country |
|---|---|---|