The "Anti Lag" system modifies the safety controls that avoid generating flames in the vehicle exhaust. With this solution, the turbo pressure remains high, even when power is not required, for example during gear changing.
The timing of the turbo-intercooler circuit is reduced to zero and flames and shots will be present at the vehicle exhaust.
This modification can not work on vehicles with stock engine, it requires robust and increased components, such as those used in rally vehicles.