TCU Tuning - G Chassis (Unlocking Required)

Stage 2/Stage 2 Plus Program

The Stage 2 and Stage 2 Plus programs focus more on sporty driving without compromising comfort. The transmission's adjusted shift points and clutch pressure enable faster shifts and reduced response times, suitable for all drivers, especially those who want better driving enjoyment in Sport/Sport+ mode.

ZD8 Transmission Stage 2:

1. Gear position display activated in D mode.
2. Internal torque limit removed.
3. Improved fuel efficiency in ECO mode.
4. Slightly increased line pressure for high torque power.
5. Modified D mode logic for better response, more comfort, and fuel efficiency in ECO mode.
6. Reconfigured DEC logic according to M models: ECO mode equals Drive Logic 1, Comfort mode equals Drive Logic 2, Sport/Sport+ mode equals Drive Logic 3.
7. True manual mode: M mode cancels automatic upshifting (effective in Comfort mode with DSC on/DTC on/DSC off, Sport mode with DSC on, Sport+ mode with DTC on).
8. Allows low torque reduction in snow or mud to minimize tire slip.
9. Faster shift speeds in DTC mode and DSC off.
10. Changed shift points and optimized shifting rhythm for easier uphill driving without compromising comfort.

ZD8 Transmission Stage 2 Plus:
11. Based on Stage 2, optimized for steady cruising above 50 km/h with higher shift RPMs for gears 5, 6, and 7, reducing turbo lag and improving smoothness with faster downshift throttle blipping.

Stage 3/Stage 3 Plus/Stage 3 GearCustomize/Stage 3 Ignition Cut Program

Building on the majority of features from Stages 1 and 2, the Stage 3 program offers faster and more agile shifting logic in all modes, elevating BMW's sporty characteristics to an unprecedented level for those who love driving enjoyment in all modes.

ZD8 Transmission Stage 3:

1. Gear position display activated in D mode.
2. Internal torque limit removed.
3. Improved fuel efficiency in ECO mode.
4. Increased line pressure for high torque power.
5. Modified D mode logic for better response.
6. Reconfigured DEC logic according to M models: ECO mode equals Drive Logic 1, Comfort mode equals Drive Logic 2, Sport/Sport+ mode equals Drive Logic 3.
7. True manual mode: M mode cancels automatic upshifting (effective in Comfort mode with DSC on/DTC on/DSC off, Sport mode with DSC on, Sport+ mode with DTC on).
8. Allows the transmission to reduce low torque in snow or mud to minimize tire slip.
9. Noticeably faster and more agile shifting in all modes, with the fastest shift speed in DTC mode and DSC off.
10. Changed shift points and optimized shifting rhythm for easier uphill driving without compromising comfort.
11. Reduced torque reduction during shifts in Sport+ mode, minimizing boost loss under full throttle, resulting in very fast and highly responsive shifts.
12. Sportier overall transmission response in Sport and Sport+ modes, with faster upshifts, more aggressive downshift throttle blipping, and shift performance approaching that of a dual-clutch transmission.
13. Allows use of 8th gear during high-speed cruising in S mode.
14. Super-enhanced manual mode: Faster and more agile shifts in M mode Sport with the highest paddle response speed (feels like a DCT). Strong downshift throttle blipping in M or S mode Sport+.
15. Improved launch control performance by managing tire grip.

ZD8 Transmission Stage 3 Plus:
16. Based on Stage 3, D mode shifting logic is made more comfortable, while S mode shifting is more aggressive.

ZD8 Transmission Stage 3 GearCustomize:
17. Based on Stage 3, optimized for steady cruising above 50 km/h with higher shift RPMs for gears 5, 6, and 7 compared to Stage 2 Plus, reducing turbo lag and improving smoothness with faster downshift throttle blipping.

ZD8 Transmission Stage 3 Ignition Cut:
18. Adds ignition cut feature to Stage 3, providing noticeable upshift feel with faster shifts and crackle sounds during upshifts at around 250NM torque and 3500 RPM (louder in Comfort/Sport mode, louder with manual upshifts compared to automatic upshifts).

Stage 4/Stage 4 Plus/Stage 4 Ignition Cut Program

Building on all the features of Stage 3, the Stage 4 and Stage 4 Plus programs enhance comfort in full-time sport mode driving, ideal for BMW owners who enjoy driving in sport mode for extended periods.

ZD8 Transmission Stage 4:

1. Gear position display activated in D mode.
2. Internal torque limit removed.
3. Improved fuel efficiency in ECO mode.
4. Increased line pressure for high torque power.
5. Modified D mode logic for better response.
6. Reconfigured DEC logic according to M models: ECO mode equals Drive Logic 1, Comfort mode equals Drive Logic 2, Sport/Sport+ mode equals Drive Logic 3.
7. True manual mode: M mode cancels automatic upshifting (effective in Comfort mode with DSC on/DTC on/DSC off, Sport mode with DSC on, Sport+ mode with DTC on).
8. Allows the transmission to reduce low torque in snow or mud to minimize tire slip.
9. Noticeably faster and more agile shifting in all modes, with the fastest shift speed in DTC mode and DSC off.
10. Changed shift points and optimized shifting rhythm for easier uphill driving without compromising comfort.
11. Reduced torque reduction during shifts in Sport+ mode, minimizing boost loss under full throttle, resulting in very fast and highly responsive shifts.
12. Sportier overall transmission response in Sport and Sport+ modes, with faster upshifts, more aggressive downshift throttle blipping, and shift performance approaching that of a dual-clutch transmission.
13. Allows use of 8th gear during high-speed cruising in S mode.
14. Super-enhanced manual mode: Faster and more agile shifts in M mode Sport with the highest paddle response speed (feels like a DCT). Strong downshift throttle blipping in M or S mode Sport+.
15. Improved launch control performance by managing tire grip.
16. Enhanced shift comfort in sport mode.
17. Traffic jam optimization: In heavy traffic, the transmission stays in 2nd gear to avoid frequent 1st to 2nd gear shifts.
18. 2nd gear start in S mode for shorter 0-100 km/h times.
19. Allows 8th gear in cruise Sport mode, lifting the default restriction and adjusting cruise shift points.
20. Further increased shift speed in Comfort mode.

ZD8 Transmission Stage 4 Plus:
21. Based on Stage 4, optimized for steady cruising above 50 km/h with higher shift RPMs for gears 5, 6, and 7 compared to Stage 2 Plus, enabling better turbo engagement and reducing turbo lag. Faster downshift throttle blipping for smoother cruising.

ZD8 Transmission Stage 4 Ignition Cut:
22. Adds ignition cut feature to Stage 4, providing noticeable upshift feel with faster shifts and crackle sounds during upshifts at around 200NM torque and 3000 RPM (louder in Comfort/Sport mode, louder with manual upshifts compared to automatic upshifts).

Stage 5/Stage 5 Plus/Race Mode for High Power Models Program

Building on all the features of Stage 4, the Stage 5 programs add racing and track-oriented characteristics to the transmission. Perfect for BMW owners seeking the ultimate performance driving experience. Unleash the Beast!

ZD8 Transmission Stage 5:

1. Gear position display activated in D mode.
2. Internal torque limit removed.
3. Increased line pressure for high torque power by 15%.
4. Modified D mode logic for better response.
5. Reconfigured DEC logic according to M models: ECO mode equals Drive Logic 1, Comfort mode equals Drive Logic 2, Sport/Sport+ mode equals Drive Logic 3.
6. True manual mode: M mode cancels automatic upshifting (effective in Comfort mode with DSC on/DTC on/DSC off, Sport mode with DSC on, Sport+ mode with DTC on).
7. Allows the transmission to reduce low torque in snow or mud to minimize tire slip.
8. Noticeably faster and more agile shifting in all modes, with the fastest shift speed in DTC mode and DSC off.
9. Changed shift points and optimized shifting rhythm for easier uphill driving without compromising comfort.
10. Reduced torque reduction during shifts in Sport+ mode, minimizing boost loss under full throttle, resulting in very fast and highly responsive shifts.
11. Sportier overall transmission response in Sport and Sport+ modes, with faster upshifts, more aggressive downshift throttle blipping, and shift performance approaching that of a dual-clutch transmission.
12. Allows use of 8th gear during high-speed cruising in S mode.
13. Super-enhanced manual mode: Faster and more agile shifts in M mode Sport with the highest paddle response speed (feels like a DCT). Strong downshift throttle blipping in M or S mode Sport+.
14. Improved launch control performance by managing tire grip.
15. Traffic jam optimization: In heavy traffic, the transmission stays in 2nd gear to avoid frequent 1st to 2nd gear shifts.
16. 2nd gear start in S mode for shorter 0-100 km/h times.
17. Fastest shift speed in all modes.
18. Clearer, more distinct shift feel.
19. Transmission remains engaged with the engine at a standstill for immediate power response.
20. Activated drag racing mode: This mode extracts the absolute maximum from the transmission and significantly improves your 0-100 times! Torque reduction during shifts is completely disabled, shift pressure is maximized, and the clutch protection threshold is raised, putting all the engine's power to the ground. Drag racing mode is automatically activated in launch control and Sport+/DSC off mode (8-speed) or manual mode (6-speed). Normal daily driving comfort is unaffected. (*Please note that clutch wear is approximately three times higher in launch mode than in normal use.)
21. Enhanced launch mode: This mode applies all pressure/torque to the wheels. To use launch control, park your car on a safe, flat, and straight road. Switch to S mode, and the car will be in Sport+ mode. Firmly press the brake, then quickly go full throttle and press the kickdown switch. In vehicles equipped with LC from the factory, "Launch Control Active" will appear on the dashboard. Release the brake, and the car will manage torque and traction to reduce wheel slip based on the new program. Enhanced launch mode combined with drag racing mode can improve 0-100 times by 0.7-0.8 seconds.
22. Increased line pressure to prevent clutch slip, extend clutch life, and handle higher torque. (Highly recommended for high-power, high-torque cars.)

ZD8 Transmission Stage 5 Plus:
23. Adds 2nd gear start in D mode to the Stage 5 program for shorter 0-100 km/h times.
24. Enhanced launch mode becomes aggressive mode with increased shift pressure, improving 0-160 km/h times.

ZD8 Transmission Stage 5 Race Mode 0-100 for High Power Models:
25. Adds a specialized tune for high-power models for 0-100 km/h straight-line racing to the Stage 5 program.
26. Limits maximum torque in 1st, 2nd, and 3rd gears to reduce wheel spin at launch.
27. Increases tire grip with the ground during 0-100 km/h launches in 1st, 2nd, and 3rd gears.

Two Special Tunes

ZD8 Transmission Stage Special-Comfort:

• Comfort mode: Improves shift smoothness as much as possible, reducing hardware-induced jerks.

ZD8 Transmission Stage Super-ECO:

• Super-ECO mode: Maximizes fuel economy in ECO mode to improve fuel efficiency.