[Joeyz]

Anyone know of an exhaust brand that has a by-pass for the iM so I can go loud or sound stock? I am trying to build a sleeper!

 

[S-Factor]

I found an exhaust thread that may interest you: http://www.scionimforum.com/forum/engine-technical-discussion/2514-exhaust-thread.html

Think someone cut their exhaust?

 

[Briggs]

So your looking for a aftermarket exhaust system that can switch between a louder sound and a more tame stock sound?

 

[charlesskelter]

Install an electric dump valve or run the old school exhaust dump with a bolt on cap.

 

[Briggs]

@Joeyz are you comfortable doing installation work yourself, or are you going to have a mechanic do it for you?

 

[Patrick.S]

Jobs like that are easy enough to do yourself, even in your driveway, wouldn't be surprised if he's going to do it himself.