A front mount intake for the S58 in the G8X M3 and M4. Rather than leaving the filter in the engine bay, a front mount system relocates the inlet to the front of the car, ahead of the radiator, where the air is coolest and moving fastest. On a hot South Florida day the difference between ambient air at the nose of the car and heat-soaked air behind the radiator is not small.
It replaces the factory airbox and inlet tubing between the outside air and the turbochargers. Fitting one means taking the front of the car apart, so it is a longer job than a drop-in filter.
No tune is required for the intake to run correctly, though a tuner can take advantage of the extra airflow if the car is being calibrated anyway. No emissions equipment is affected and it ships to all 50 states.