You can use this site to find the approximation of your center frequency based on cylinder bore size:
https://www.phormula.com/KnockCalculator.aspx
Based on your 95mm bore, your center frequency starting point should be right around 6.0 kHz
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-Jayson
1976 911S Signature Edition - 3.2SSt (JE 98mm 9.5:1 pistons, 964 Cams, Carrillo Rods, ARP Head Studs, AASCO Valvetrain, 3.2 Carrera Manifold, ID725's, B&B Headers, TS HyperGate45 Gen V, TS RacePort, BW S360, AEM Infinity 506, E85)
IG: Signature_911
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