The 300TD in my 4Runner has a 2.5inch exhaust with a straight thru muffler and the damn thing is too quiet, my 2.4 toyota diesel had a much louder rumble, I cant believe its so quiet, more of a whistle actually

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91 Toyota 4Runner powered by a 84 300SD driveline. Truck has 4:56 gearing on 31 AT tires, 2.5inch exhaust. Pillar mounted exhaust pyro and Boost gauges