My new 2013 WRX 5-Door had the SPT Exhaust installed at the dealer. To the dealer's apparent amazement I took the OE exhaust (mid pipe and muffler) home, it is safely in my garage. The SPT exhaust is a little loud for me, I am considering options.
With the SPT mid pipe installed, can I swap in the OE muffler, or do I need to also replace the mid pipe? Would this arrangement have any negative effect on the warranty?
The dealer charged two hours @ $85 per hour for the installation, so while not free it's not killer-expensive either.