911sc Exhaust Question

[krisbrook9]

I am looking at replacing the original catalytic converter and muffler on my 1982 911sc as I believe the internals of both parts are rusted out and I want to make the vehicle quieter. I plan to replace both parts with OEM parts. My question is what is the factory specification in decibels for how loud the standard exhaust is? I want to see how much improvement I can expect from changing out these two parts. Also, if anyone has any feedback on making the 911sc quieter it would be much appreciated.

[82 SC]

Going stock will make it as quite is it probably can be. I guess you can add more sound dampening to the interior if you want. How is your sound damping pads on the other side of the motor on the fire wall?

[Oh Haha]

Make it quieter? Never heard of such a thing!!!


j/k I have the factory Euro premuffler with a Flo-Pro muffler and love the sound it makes.

Be sure to look at the Pelican classifieds as stock parts come up pretty often. If you want a stock muffler in great condition I have mine I would sell you.

[krisbrook9]

Thanks for the info. I have recently installed a new sound pad on the firewall of the engine bay. My concern is mainly how loud it is to the outside world. Right now its decibel reading is 75-80 dbs from 10 -15 ft away from the tailpipe. I was hoping someone would know what the decibel reading was out of the factory so I can see how much improvement I will see when I replace the catalytic converter and muffler.