I Just bought a new car, YA it's a Stang but that's irrelevant. The issue is that the drivers side exhuast puts out alot more pressure than the passenger side. So i just have unequal back pressure. Is this anything to worry about? and If so what's causing it and how can it be fixed? Any help would be awesome. Thanks in advance

 

maybe its just cause your car sucks or in this case blows. lol j/k. i'm thinking that you might have a plugged up cat. on one side maybe. more flow on one side is common with cross flow designs like on the 3rd and 4th gen exhaust, but yours is true dual so its kind of confusing i'll have to come over and take a look at it.

 

what causes the cat to plug? and how do i fix it?

 

exhaust. get a new cat.