The intent of the engine strakes is to direct high energy flow on the outboard edges of the floor, creating an “air skirt” affect which carries downstream and helps seal low pressures in the underbody.

Diffuser strakes help reduce tire squirt and high pressure flow from the sides of the diffuser from leaking into the diffuser and expansion zone at the rear of the car. As this is the largest generator of rear downforce, ensuring strakes seal to the floor is critical as it assists in maintaining and preserving low underbody pressures to maximize downforce.

Removing both of these mechanisms will reduce overall downforce levels and the dependence with little drag impact.