06/11/2025
Golf MK8 2022 2.0 TSI/TFSI 300 HP β Part 5 β Fuel Tests + Additional Thoughts and Improvements
So, the fifth part β and not the last one β is dedicated to the improvements weβve introduced over the past two months and 16,000 km driven in this car. Since the car is currently used in the company on a daily basis, weβve managed to spot a few annoying issues that have since been refined to make the product 100% satisfactory.
Aside from the obvious fuel testing, weβve made the following changes:
β’ Additional switchable MMI map for 95-octane fuel β since we sometimes drive across the Czech border or to smaller towns where 98-octane fuel is unavailable, weβve added an extra βEfficiency 95β map. On this map, the car produces 508 HP and 671 Nm.
β’ Improved gearbox behavior with traction control enabled β it no longer shifts nervously to the next gear in D/S mode.
β’ More linear throttle response β previously there was too much difference between 0β80% and 80β100%.
β’ Final Stage 3 tuning for 98-octane refined to achieve zero timing pull. The downside: the car now produces 523 HP and 676 Nm on 98.
β’ 100-octane map also has zero timing pull and delivers 544 HP and 694 Nm.
βΈ»
A few words about the Stage 3 ECU & TCU software
ECU:
β’ Full tuning with visible torque reporting for the gearbox (700 Nm shown in logs).
β’ Improved oil and coolant temperature management strategy (optimized for more aggressive driving).
β’ Optimized lambda for track use β max EGT 780Β°C!!!
β’ Temperature-based safety limits: gradual power reduction above 105Β°C water temp and 135Β°C oil temp.
β’ Added our proprietary MSR RACETCS system (video coming soon).
β’ Pop & Bangs enabled only in Sport mode β switchable via the menu!
β’ V-max off, GPF off, cat off.
β’ Limited torque in the first 3 gears to maintain traction.
β’ Additional Efficiency 95 mode.
TCU:
β’ Optimized Drive mode.
β’ Increased clutch pressures.
β’ Torque limiter removed.
β’ Improved launch control.
β’ Disabled gearbox βdriftβ (optional).
β’ Faster gear shifts, better turbo RPM retention for the Garrett in Sport mode.
Stage
Configuration
Fuel
Boost
Power
Torque
Stock
β
98
1.8 bar
323 HP
465 Nm
Stage 1 (software only)
β
98
1.8 bar
409 HP
550 Nm
Stage 1 (R600*)
R600 intake
98
1.8 bar
422 HP
568 Nm
Stage 1 (R600 + Wagner)
+ intercooler
98
1.8 bar
436 HP
568 Nm
Stage 1.5 (R600 + Wagner)
β
98
1.92 bar
447 HP
587 Nm
Stage 2 (R600 + Wagner + Scorpion)
β
98
1.8 bar
465 HP
610 Nm*
Stage 3 (R600 + Wagner + Scorpion + Garrett Pmax)
β
98
2.25 bar
523 HP
676 Nm
Stage 3 (100 Octane)
β
100
2.35 bar
544 HP
697 Nm
Performance (Dragy)
β’ Stock: 100β200 km/h β 11.9 s
β’ Stage 2: 100β200 km/h β 7.4 s
β’ Stage 3: 100β200 km/h β 6.0 s (slight traction issue on 3rd gear)
200β250 km/h β 5.0 s