Honda accord (euro) whistle on acceleraton

[andrew doyle]

Hey all,

Wonder if anyone can help me with this issue.

A few months ago I replaced my downpipe of my exhaust with a aftermarket pipe. But now I seem to have a whistle when accelerating over 2.5k.

I’ve checked for intake leaks – not found any. (thanks for the videos Eric)
the best way of describing the noice is like a turbo spooling up.

The noice is not there when car is stationary only when moving.

Any help would be greatly appreciated.

Thanks
Andi

Topic

[Daniel]

So does it make the noise when you are stationary but push the accelerator?
Does the noise coincide with vehicle speed or engine rpm?
The exhaust may be rubbing against a moving part, like a CV boot.

[Robert Weber]

Just verifying the info. You replaced an exhaust part, but checked the intake for leaks? I have an 02 Acura TL. The seal started leaking on the exhaust. Didn’t notice it unless nailing the gas when cold and got to around 3 grand. Sounds somewhat like you described. I replaced the gasket and bolts at that union, problem solved. Did you use new gaskets when installing the exhaust parts. I would check the downpipe to exhaust pipe connection. If you can’t verify a leak, and you loosen the connection and drive again, the sound should change if it’s that seal. Hope this helps.

[David]

jack the vehical up onto jack stands and start it up and careful have someone drive the vehical and have a look and see what is going on or where the noise is coming from.

[Author]

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