I'm running jb3 with the single log filter pretty much the same as dual cones and I always have that woooosh when letting off the gas. sometimes its louder all depends if you were punching it or not. I suppose u should hear the turbos sucking in air and then the woooosh.
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2022 M Sport G05
Jb4, CTS catless dp, M performance exhaust, bms intake, IND goodies, Maxton kit
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