The warm right foot is one of the 'endearing' features of the RS

Great on cooler days but irritating on hot days in slow traffic.
It's not just from the exhaust but also the rad.
SpyderPops (site sponsor) sells deflectors that will sort you out. I've not bothered myself but several people I know have fitted them and said it does the
job.
Look for "Missing Heat Shield" and "Air Management System" on this page of his site:
http://www.spyderpops.com/6.html