Hmm , I ran my h pipe for a while w/o mufflers. Im not sure if I lost power or anything as I never drove it @ the strip like that. It was very annoying though. It sounded like a hillbilly truck. I dont recommend doing it , but hey you can try. If youre going to do it , unbolt from the flowtubes , that way you can still keep the mufflers , and have the open affect of the H pipe. Hope this helps.
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