Whistling noise around 40mph? any ideas?

[KyL3]

As stated in the title I seem to have a whistling noise possibly coming from under the car but only when I sit or around 40mph. Is my exhaust leaking air? What else could it be? All input would help.

 

[bozothenutter]

do a search for cat to manifold......that is usually it

 

[KyL3]

Yeah looks like it is! Anyone else had the same problem?

 

[bozothenutter]

No nobody.......

 

[botfch]

No nobody.......

Haha loool!

 

[KyL3]

Looks like im the only one with a naff system then