Ok guys,I put a new exhaust on my Audi A4 2.8Quattro....

Item:
Magnaflow 2" Hi Flow Univ Catalytic Converter X2

Item:
Magnaflow Muffler 5X8 Oval Street Series w/ TIPS 14816


Getting a BUZZZZZZ sound around 2500-3000 RPM

I have had it checked for leaks multiple times and there are none.

Is this the way this setup is suppose to sound?????????

 

I don't think so. Is your setup custom? I had an exhaust once that was installed and it hung a little too low causing a vibration, I took it back they moved one of the hangers up a bit and that fixed it. On another note, if your cat core has broken up, that would also cause a rattle too, but i'm guess that yours is new and probably not the problem.

 

Do you think it could be because of the high flow Cats VS the stock Cats?

 

nop its has nothing to do with stock vs afermarket Cat.

vibration somewhere on your exhaust line is causing the BZZZZZ or you will need a glasspack

 

Yup i have a bzzzzzzzzzzzzzzzzzzz around that too---I also have a little exhuast leak pre cat though.

 

by a "buzz sound" you mean something other than the exhaust tone itself right? I know my magnaflow was fairly loud between 2000 and 3000 rpms.

 

i just got my exhaust done too and right around 3k rpm i have a noise its more of a rattle but its only when i put my pedal to the floor i think for me its just because i still have the stock muffler and there are restrictions

 

I removed my stock resinator and muffler, replaced it with a highflow resignator and a magnaflow exhaust. Sounds super sweet in all ranges. Although I do have a small exhaust leak before the cats where that stupid flex pipeing is. Im going to get that fixed as soon as I get back from my vaccation. Thinking about removing the cats and putting something else in, not sure if im going to go hi flow cats/testpipes/or glass packs. What are your opinions? Dont want it really louder just a bit more crisp.

 

^^ nice avatar lol i got a good laugh out of it!!!

 

its gotta be the cats, my buzz like a ******. but i also have a loose heatshield on top of the resonator. let us know if you find a fix, i can live with the rattle but its annoying.