Blown Engine
Pro
Joined: Jan 2010
Posts: 629
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From: Freedom PA
Racer
Joined: Jul 2006
Posts: 395
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From: Springfield MA
Burning Brakes
Joined: Dec 2007
Posts: 967
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From: Downers Grove IL
My real question is can a manufacturer PROOVE that an K&N filter or a cat back exhaust caused a certain issue? Also, I read the entire MMA and it mentioned nothing about HP gains. We also all know a K&N filter is not going to produce any real gains. 
And please don't cause me Sir... you make me feel like my father...
And please don't cause me Sir... you make me feel like my father...
Le Mans Master
Joined: Oct 2004
Posts: 8,615
Likes: 60
From: Haymarket Virginia
Team Owner
Joined: Sep 2010
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Advanced
Joined: Feb 2014
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DNA search
If the car was tuned and the dealer found it then, yes, they are **** out of luck. It would be a very expensive day for the owner.
On a blown engine, I'm almost certain GM would look for any evidence of a tune ever existing on the car other than OEM. If the car simply had a CAI, etc and no tune, the owner should be good IMO. The tune is what GM would look for to deny warranty coverage. If the car was tuned, the owner would need to try to flash it back to OEM (if possible) and then pray that GM could not detect it was ever there in any way.
You need to be prepared to pay if you want to play
On a blown engine, I'm almost certain GM would look for any evidence of a tune ever existing on the car other than OEM. If the car simply had a CAI, etc and no tune, the owner should be good IMO. The tune is what GM would look for to deny warranty coverage. If the car was tuned, the owner would need to try to flash it back to OEM (if possible) and then pray that GM could not detect it was ever there in any way.
You need to be prepared to pay if you want to play