pretty sure ive got at least one clogged cat and was tossing the idea of getting a new exhaust system for my s4 n/a vert around. Being as we have to adhere to the stupid smog tests in Ontario what type of system would you guys recommend? Ive got a stock original system and just passed the emissions with flying colours and would like to maintain that while possibly seeing some performace gains from getting those clogged cats out.
Ideas???
would also like to take it easy on my wallet keep in mind.....
anything local (toronto) is good too for suppliers etc.

 

put the stock on, get the etest, take it off and use a gutted cat.

 

dont care for a loud exhaust at all and i cant be bothered to be switching that **** around. thanks for the idea though

 

check out racing beats exhuast if you dont like loud but like performance...