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I installed a cat back OBX exhaust on my 850 t5 1997....I t droans like a mofo at highway speeds 65-75 mph...is this the nature of the beast???? any one have a hypo system that doesn't make my ears bleed they could recommend ???....I have checked it a couple times and it isn't touching the body and all new hangers...
 

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You may want to add a resonator to help keep the noise level down.
 
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