I still want to say that's the turbine spinning that you hear. Turbos make all kinds of noises like that but when exhaust gases are going through the full system w/ mufflers it muffles those frequencies out and you don't hear them. What you may be hearing is turbo surge, or flutter. Maybe not this extreme but an example, Turbo Surge
Kai
body kit is considered -2 on the stage chart - Guapo 10:36:58 12/14/05 AshsZ in Florida: I'm gonna fire my sh** up today 1/14/06 90% of the time ..plano soccer mom girls are hot the other 15% they are crackwhores...with the overlap. -genic 06/29/06 Drag cars have brakes? Real men have parachutes. - Bernie (NoVA) 01/13/08
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