Originally Posted by
syfi
As stated before an "X" pipe in place of the rear cats and "H" pipe solves the problem completely. I deleted the muffler and have the OEM resonator in place and NO drone what-so-ever.
From Magnaflow:
meh03, I didn't witness the install. I just dropped off my car and picked up later. The rear cats don't have O2 sensors so no problem removing them. They told me the install was pretty straight forward. I'll have a look later to see exactly how they installed it.
I don't want to be quite that loud, that's why I'm keeping the stock muffler. While I am deleting the CATs and resonator, the resonator is being replaced with a smaller inline one. I'm hoping for a deeper and only a little louder sound.