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ON MY 87 CARRERA SLANT I,VE INSTALLED AN AUTHORITY CHIP,
VERTEX CONE FILTER , CAT BYPASS, AND BURSCH MUFFLER AND
ABSOLUTLY LOVE THE PERFORMANCE. IN A CABRIOLET THE OLD
B AND B TWIN 4" EXHAUST WOULD POP AND CRACK AT SHIFT POINTS AND DROAN AT A STEADY 70MPH, NOW THE CAR SOUNDS LIKE A PORSCHE AGAIN AND DOES ROAR WHEN PRESSED. AND IS
QUIET WHEN DRIVEN CONSERVATIVLY.
KEITH
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