LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

tiny exhaust leak on collector of AS&M y-pipe, is it hurting me?

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Old Mar 7, 2003 | 03:02 PM
  #1  
sc93's Avatar
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From: Northeast Ohio
tiny exhaust leak on collector of AS&M y-pipe, is it hurting me?

I noticed a small exhaust leak at the y-pipe collector just before the cat on my 93 Z28 with AS&M headers. Is this hurting my performance or gas mileage? It's too cold to get under there and fix it right now, I gotta wait until the weather gets nicer.


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Old Mar 7, 2003 | 03:14 PM
  #2  
mike95z28
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I don't see how it could cause a problem. The leak is after the O2. So the O2 is getting a correct reading. The only thing I can think of.. is if the ticking sound from the leak gets loud enough your knock sensor may pick it up as false knock.
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