2001-2003 Lola-MG EX257

Images copyright and courtesy Greg Cooper, Juha Kivekas, Jeff Nagle and Michael J. Fuller
Text copyright Michael J. Fuller

As pointed out before on the Lola B2K/40, the MG utilizes a duct in front of the rear wheels to pull air into the base area of the car to reduce drag.  The MG continues the low drag theme with the low slung rear wing that acts to improve extraction of the rear underbody diffuser.
The floor area just aft of the front wheel fender is 3-D in cross section.  This might serve to increase the air flow velocity locally to encourage further extraction from the front nose diffuser. 
The 3D section comes very far forward and terminates slightly aft of the front wheel.
Dyson Racing's 2003 developments include a modification to the trailing edge of the pontoon fender.  The trailing edge is aimed more outboard and is lengthened.  This detail change works a couple of ways by helping to reduce the drag of the sidepod intake (directing outboard airflow away) as well as improving the exit airflow for the front diffuser.
The Lola B2K/10 had a similar modification.

©Copyright 2003, Michael J. Fuller