Originally Posted by Cyber370

Firstly, welcome to the forum!

The simple answer to questions 3 and 4 is NO. Axlebacks will not affect O2 sensors or power.

Axleback recommendations depend on what type of sound you looking for. If you want slightly louder than stock with no drone, I highly recommend AAM Performance S-Line muffler. If you want louder and a very unique sound, the Meisterschaft is probably the top axleback to buy but it is extremely expensive.

Muffler deletes known as short tails are extremely loud and you will have a lot of drone coming into the cabin. If you’re ok with that then go for it. There is no big difference in sound between different brands but the fit and finish may vary. Probably the most popular are the AAM resonated short tails. Remark also makes a pretty good short tail axleback.