Hey, I've had my cutout on a few months now, and have noticed I may be getting a little worse gas mileage with it. If I drive with it open all the time, I seem to get like 210 to the tank. If I drive around with it closed, I get 250+ to the tank. Does this make sense? Or am I crazy? And be careful for the '03 cobras, I was at a dyno day, and this guy with some tuning, catback, and pully (Basically) put down 485 to the rear wheels. (I prob. shouldn't have mentioned that) but we gotta start throwing some superchargers on our cars. So anyways, What have you guys noticed with your gas mileage? THanks.

 

Um, it's probably cause when the cutouts open, it makes you drive differently, cause u feel different when your drivin a car that sounds like that!!! Hence you use more gas!!!