I had my Magnaflow installed a few months ago. I love it, sounds great, looks great, except the pipes are off a little coming out the back (SI/DO). Is this “normal” due to being an aftermarket product that is a bit off, or did the shop mess up and I should get it fixed?

 

Had to have been the shop. A cat-back rarely is off on angles, if you bought a muffler and tips, thats the only thing you are risking, un-alligned pipes. Ask the shop to correct it.