Loud Whistle Noise

[JCskyline]

so today after work i was just entering the freeway and i had to speed up, the car was stil abit cold cos i had just gotten out of the car park. and the lane was ending and i had to merge to do a uturn. anyway i stepped on it hard and all i herd was a really loud whistle noise, usually my car doesnt whistle this loud. just wondering what it could be? and ideas? btw just the day before i put my stock exhaust back on ( cos i got an epa letter apparently its too loud) so anyway could this have some thing to do with it?

please help and thank you

[AngryRB]

if there is a leak at the flange of the dump due to wrong gasket or poor seal then you will hear some whistling more than usual

Edited October 8, 2012 by SliverS2

[JCskyline]

oh okay im gonna have a look at it with my friend on the weekend

[Hadouken]

a whistle = pressure leak

[JCskyline]

hmm roughly how much u rekon it would cost me, like for gaskets or whatever i need to fix cos im pretty much broke atm im trying to sell my new irridium spark plugs for more money haha to fix my car 100$

[Hadouken]

did it only happen after you put the old exhaust on?

[JCskyline]

yeah it only started happening when i put my old exhaust on