Thanks for the feedback , the level is made to be that tricky :v
If you're refering to the cyan lasergrid with a 90° corner you must disable your wing at the entry then rotate your car fast and re-enable wing without losing much speed.
I suggest you to take a look at ghost who finished the track , it will help for sure !

This level is one of the best looking level i have seen and has great ideas but is so impossibly hard. The lasergrid walls could be much farther apart and more checkpoints are needed.