Whistling Noise??

[crafto]

Hi folks, recently had a new standard exhaust fitted on my 172 and theres a whistling noise when im high up in the revs? Is this anything to do with the exhaust or is it more likley to be the air intake? Cheers.

 

[Dan 172]

I think a few seem to make this noise, I don't it's anything to worry about.

Mine doesn't but my mates 172 did.