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In my region I don't have easy access to parts like in the U.S. I can't easily obtain either a used original muffler or good aftermarket muffler. I currently have installed on the car a $2,000 aftermarket muffler and header set up which I inherited from the previous owner which I absolutely hate because it is so loud. It makes the car nearly undriveable and in my non-medical non-expert informal opinion maybe could cause hearing damage to the driver (me) over time. It has dual outputs (two tailpipes, one on each corner of the rear of the car). It looks like a beautifully designed stainless system but it's terrible from a practical usage viewpoint because it's so overly loud. It's probably great for a racetrack when the driver has a helmet and ear protection, but I do not use my car on a racetrack. I had a welder restrict one tailpipe completely by capping one side internally inside the tailpipe. That output side has been 100% restricted. Capping off that one side completely reduced the loudness by 30%. I wasn't satisfied. So I had the welder restrict the other side narrowing 80% of the pipe's inner diameter. The car still has plenty of power now and acceptable sound volume, but I've been warned that with only 1" square inch of total tailpipe output diameter it will destroy the exhaust valves or other internal components due to overheating at higher RPM.
Is that true?
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