2015 Corolla S with Magnaflow exhaust.

#1
I bought my Corolla and it came with what appears to be 4” pipe that ends in a very small straight through magnaflow muffler. I have grown weary of the drone and want to put a decent muffler on there to quiet it down and get some power and torque back. Does anyone have any suggestions?
 
#2
The aftermarket exhaust should give you slightly more power than stock. As for the drone you’re stuck with it unless you go back to stock which will give you less power.
If you go back to stock muffler and get a tune then you can get 20+ hp. Tunes are expensive though and you'll probably have to start using premium fuel.
 
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