Yes, the tuning helps. If the car is understeering in coast try raising the coast ramp angle and reducing the clutch packs. Take the 2021 Corolla to Azure Circuit (Monaco) and try a few laps with the default setup. Then raise the steering lock to preference, coast ramp to 85, power ramp down to 30 and 2 clutches. Now try Loews and the two Portiers. A lap under 1m 40 is quite feasible with this setup. Don't bother with it at Interlagos Outer.