Exhaust is buzzing

[deadmau5]

I had a decat pipe put on my exhaust at the start of the month. Since then however, whenever I'm on full throttle from 3500-4000rpm and from about 5000-redline it buzzes like mad. Could it be that the pipe isn't sealed properly and it's blowing? I know it's quite raspy when you have decat and centre silencer delete but this is just ridiculous and like nothing I've heard before.

 

[shubz197]

Can u send a video clip or something so we can hear the sound? Do you feel a power loss or flatspot when this noise occurs?

 

[deadmau5]

No perceptible loss of power, just the noise. The exhaust is louder at 3-4k rpm than it is at 4-5k rpm.

 

[deadmau5]

Another thing, I'm 99% sure it's not a heat shield because the noise disrupts the normal exhaust noise, and it's especially noticeable at the higher RPM that it's coming from the tail pipes.

 

[EviLNeeDs]

Could it be your manifold?

 

[BenW]

Almost certainly the sleeves joining the decat pipe to the rest of the exhaust rattling. tighten up the clamps and see if it helps.

Had something similar on my exhaust tips, tightening it stopped the rattle

 

[stuieplk]

Get that oreca bought and fitted Ross, stop playing games!

 

[deadmau5]

Okay Ben cheers

Stu, shut up, I'm trying to f*cking save! (I'm secretly hoping the exhaust is fubar so I can justify the Oreca :s)