Buckwild

Out of everyone that has put a cat back on, what about the flex pipe that the stock had? Do all cat backs have this?

Love they way that sounds. I want to do a single, 3" pipe, custom cat-back and probably go with a Magnaflow due to the fact they are stainless, many different choices and less expensive compared with a Borla. My question is oval vs. round muffler? I would guess if I went with round I would need a little longer one than a 18" oval to get similar sound results? Opinions please. I watched the Magnaflow youtube video with their cat-back single pipe system for the '14's and it was too quiet but that was a 22"muffler.

mzodarg- with the muffler delete does it sound good? I'm not looking for loud but a nice rumble, a guy posted a video of his truck under the topic "muffler delete" and I love the way that sounds.

I have the same noise at times too from right side under box with the Rancho shocks. The shock seems more likely the issue as it seems to happen on rougher roads which will make the suspension move quicker. I doubt it's fuel sloshing from having no baffles in tank, if there were no baffles the fuel would move away from the pickup tube and the engine would die every time you accel or brake.

Just had my 2014 Silverado Crew Cab4x4 6'6 " box 3.42 rear end to dealer for vibration but this happens at approx 30 mph at 3000 rpms under moderate to heavy acceleration coming out of a turn but they couldn't duplicate it. I also have noticed the tach surging when in 4 cyl mode at 1000-1200 rpms when going up slight incline but forgot to mention it to them. Have not noticed the vibration at 60 mph and up and I have Goodyear tires not sure which model. 3100 miles on truck but I have a topper so maybe the extra weight of that makes it not noticable. I also complained about a large hesitation when going up hill, letting off gas then trying to accelerate. The truck will do nothing to accelerate for at least a second (seems like forever) then will take off like nothing happened. Only happened twice. The dealer said it normal so the trans gears don't slam into each other. I think otherwise.