Exhaust Bumble-bee is a tricky box.
Instructions
1. Unbolt the tubes running from the catalytic converter to the tail-pipe, admitted as the "cat-back" divide, and remove them. Transform the tubes with a larger breadth, thicker-wall establish of tubes or "cat-back operation." This goes fitting to the core of the hot water, by reason of thicker tubes carry a far lower resonant Closeness than thin tubes.
Unlike the sound that comes from the tailpipe or intake, exhaust Bumble-bee isn't directly a creature of engine sound. It's a sympathetic vibration that develops in the exhaust pipes resulting from often-inaudible sound waves emitted by expanding combustion gases. These impact waves navigation completed the exhaust stream, bouncing off the walls of the exhaust tubing and causing it to behave analogous a speaker. Unfortunately, reducing or eliminating exhaust drone isn't in truth as no sweat as swapping mufflers.
Replacing thin-wall steel or titanium tubes with thicker-wall steel tubes Testament add some weight, nevertheless it may extremely solve the dispute altogether. Installation procedures Testament vary exceptionally by vehicle, so chase your exhaust manufacturer's recommendations.
2. Wrap the exhaust pipe spanning from the exhaust manifold/turbo to the catalytic converter with a layer of heat-insulating header wrap. Wrap the tube with a double-layer at the manifold/turbo flange and secure it with an exhaust clamp. Wrap the tube in spirals so that each spiral overlaps the last by 1/2 inch, and secure it on the converter end with another exhaust clamp. You could replace this section of pipe with a thicker-wall tube, but there's a lot more effort and cost involved than just wrapping the pipe.
3. Cut a section out of your cat-back exhaust system about 12 inches away from the converter and install a resonator. You've got a couple of options here. You could use a junkyard resonator from a vehicle with an engine of similar displacement and engine type, or you could install a 6-inch cherry bomb-type muffler in the pipe. The cherry bomb won't target high-frequency waves as accurately as the stock resonator, but you can find a cherry bomb to fit almost any sized exhaust pipe, and it's small enough to fit almost any application.
