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The TiAL Sport QRJ BOV 1.5 psi spring is a replacement spring for the QRJ-series blow-off valve that changes the valve's release pressure to roughly 1.5 psi, helping tune recirculation or venting characteristics on forced-induction engines. This unit arrives in purple and supplies a defined 1.5 psi spring rate for QRJ blow-off valves, giving tuners a predictable valve release for consistent operation.
TiAL Sport QRJ BOV 1.5 PSI Spring - Purple
