[s-cars] air leak....poor performance

[Charlie Smith]

Earlier, Bill Clancy wrote:
> 
> Hello all
> 
> I have had what sounds like an air leak for a couple months or so.    
> I have looked for it a few times but I cannot seem to find it.    
> The performance is poor -- feels like 75% of what I used to get, 
> and I get shitty gas mileage too.    
> 
> Can anyone suggest a place to look for it?   
> 
> I think I have ruled out:
> - the bypass valve (new again)
> - the michelin man hose (replaced with Samco and appears in tact) 
> - the plastic hose before the michelin man hose (appears in tact)
> 
> What other typical failures can cause an audible hissing noise at WOT?   

I chased this around and around last year, and it turned out to
be the plastic crossover pipe, which was split lengthwise on top
of the pipe.  I couldn't see the split until after I removed the
crossover pipe.

I put on one of the aluminum replacement pipes, and it did the job.
Expensive as I recall, but it holds up.

    - Charlie


  Charlie Smith  charlie {at} elektro.cmhnet.org  614-471-1418  
  http://www.elektro.com/~charlie          Columbus Ohio   USA
  http://www.elektro.com/~audi         photos & technical info

  95 S6 Quattro  -  24 PSI, RS2 6 speed, and other features  
  97 Dodge Ram   -  40 PSI, 4x4 w/Cummins turbo diesel