[s-cars] Air leak or turbo whoosh?

[John Petersen]

Check the hose under the intake manifold, it is prone to cracking and when
it does so will generate a large woosh sound under boost. It may also cause
some oil spray on the intake side of the engine. The hose is a sideways T
which goes from wide to narrow or vice-versa. I have found this to be a
problem on several S-cars.

John '92 S4, T04E 50 trim

At 09:58 AM 5/29/2002 -0400, Elijahallen92 at aol.com wrote:
>  I had pretty much ruled out any air leaks in the system but in my search for
>more power am back to thinking there is way to much outside noise under
>boost. I have all the samco hoses and an upgraded MAF to turbo hose with
>heavy duty clamps so I am positive those are not leaking. I even have a
>second set of samco in case of emergency hoses that I put on just to make
>sure I wasn't missing something. Does anyone else with a BIG turbo get a loud
>whooshing under boost? With the windows up it is loud. With the windows down
>it sounds like it is coming from the intercooler but that may be just because
>I am sitting right there. When I first bought the car it had a small hole in
>the turbo down hose and the car would have hesitations and sometimes even
>overboost but with this the only hesitation is trying to get the big turbo
>spooled up and after that it pulls strong. I guess my question is does anyone
>else have the loud air flow with a big turbo? Thanks for any help.
>I used to live in Steamboat Springs Co. but that was before I had a s-car,
>now I wish I still lived there. Not much going on over here in Michigan as
>far as tuners who even have herd of a s-car.
>
>  Elijah
>   S-4
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