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The TiALSport Q blow-off valve with an 11 psi spring in black is a BOV for forced-induction engines that provides controlled boost relief using a slightly stiffer spring preload. The Q-style assembly yields a consistent valve response at that rate. This black variant keeps a clean engine-bay appearance while offering the higher spring option for tuning.
TiAL Sport Q BOV 11 PSI Spring - Black
