just installed my DP and Q300 on my '13 sedan. noticed that the resonator is rubbing/rattling against the underside of the car. i can feel it with my hand behind the center console. does anyone else have this issue? i have tried to re-adjust the mid pipe but the flex joint just pivots and won't let the adjustment stay when i tighten the bolts.

 

try to find the source of the rattle...could be 2 things

-your mid pipe is hitting the drive shaft heat shield. Solution is to buy 12mm extra long exhaust hangers (our model uses 5). You might get away with 3 and leave the 2 stock hangers near the tips so they don't hang low

-or you might just need stiffer exhaust hangers. Everyone buys kartboy hangers but i went with these myself:

Alien Embryo Exhaust Hangers 12mm | Catalog Products | Shop | Paranoid Fabrications

I like to support the small business owners Plus you get 5 for $40 shipped which is a great deal.

FYI DO NOT use any lube on the polyurethane hangers. Stuff like wd-40 will eat threw the material (not sure why but it does). Just use some soap and water to slip them on.

 

Loosen all bolts on tbe and realign everything, I did what guy said b4 I tried making adjustments and my hangers have been on cl for 3 months, never used, brand new

 

I installed my q300 too on my 12 sedan and there was rattling where the resonator is. i did a resonator delete and there wasnt anymore ratte!