[avalonandl]

Originally Posted by enzia35

https://www.mishimoto.com/engineerin...he-crimp-myth/

We found the same thing on the Pontiac GTO 2005-2006. There was a crimped section. All the guys said it was worth 10 hp....guess what... NO DIFFERENCE...

[MackSteelPrivateEye]

Originally Posted by avalonandl

The Flattened section does not affect power. Tests have proved this. For an OE system the C6 system is actually pretty darn good.

That's a crimp zone. Can save your upstream exhaust if hit from the rear.