I have '03 Cobra 'vert that I believe may need the EGR valve replaced. On occassion it will die when pulling up to stop at a light or stop sign (clutch engaged). It also seems to idle rough to me. I had an '03 GT that I sold to buy the Cobra which idled much smoother. The only mod to the car at this point is a Borla catback. I've been doing some reading on the EGR valve, how it work - what happens when they go bad etc....sounds like my problems. Any suggestions or anyone dealt with this issue before. I'm not a motor head like most of the guys on here (I know some basic things) and this is my first supercharged car. If anyone can help....I would appreciate it....