I removed mine and replaced with the Z1 hoses when I got my CAI, and couldn't really tell the difference.
https://www.z1motorsports.com/z1-pro...es-p-4752.html
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FI Non-Res Test Pipes | FI 18" Res CBE | Stillen Gen 3 CAI | Dynotuned @ Dynosty EcuTek 325 whp
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