Yeah, I passed with keeping the second stock cat. When I replaced the second cat with an aftermarket "hi-flow" 50-state legal one, I threw a code. So I had to rig the second sensor to read correctly. PM me and I can tell you how (Forum rules), otherwise you can use ecuflash to adjust your values to get the second sensor to pass.

As long as you still have a decent cat on the system you'll pass smog in MA. You'll definitely fail in cali

 

Yeah, stainless steel my butt. The wire mesh wore off in 6 months, and this finally ripped apart on me 2 years into owning the exhaust.

 

Hey you got lancer parts for sale I seen? And i wanted to get some headers for my 08 Es but I'm not sure what to get. I heard RRM is good but there so expensive. Is it worth paying for RRM or is something like flowmaster or DC just as good to buy?