Hi,

I am brand new to these forums. I just found it while researching exhausts and found a whole lot of other useful info - so I decided to register!

I have a 2010 Focus ST (Panther Black).

When I first purchased the car, I remapped the ECU with Code-Red software which I am very happy with. What a difference! Now, a few years later, I am looking at changing out the exhaust from OE and had some questions.

Since it is already remapped, do I need to find an exhaust that is "compatible" with the software/programing or will anything work? I was looking at either the Mountune or Mongoose exhausts. I really don't work anything too loud or annoying - a deep throaty sound (like my old Mustang) is my goal. Any suggestions?

Also, after changing the exhaust, how would this affect the annual emissions/inspection? Will my car still pass - Sweden has tough laws when it comes to emissions/CO2.

Thanks for the time.