FlatOut 4: Total Insanity
46 Achievements
25-31h
PS4
No Speed Limits
Burn nitro continuously for at least 5 seconds in a race
55.6%
How to unlock the No Speed Limits achievement in FlatOut 4: Total Insanity - Definitive Guide
Simply fill your nitro to the max and wait for a straight to unleash it all in one go. This will get you the “Reload!” trophy.
If you don't also get the “No Speed Limits” trophy at the same time, you may need to pick another car with higher nitro or simply upgrade the nitro for the vehicle you are using.