Join Date: Aug 2005
Location: Ellicott City, MD
Re: Question about the Catalytic Converter
It isn't a silencer, it is a resonator. It will generally increase the sound slightly by removing it, but its main purpose is to tune the exhaust note to a certain tone. As you mentioned it has very little effect on performance. Installing larger/less restrictive exhaust piping and a higher flow muffler will increase performance some, but it does a lot more to increase sound then performance.
A catalytic converter is either a bunch of pellets housed in the exhaust or a honeycomb setup in the exhaust coated with 3 different metals (all extremely expensive) that cause the exhaust gases to recombine or split in to more desirable compounds. So Carbon Monoxide (CO) combines in to Carbon Dioxide (CO2). Oxides of Nitrogen (NOx) split into Nitrogen (N) and free oxygen (O) and unburnt volitial organic compounds (unburned gas/VOCs) split/combine into carbon dioxide and water (H2O).
So removing it is extremely bad for the environment. It will increase the exhaust volume a resonable amount it can also free up some performance. That being said getting a cheap high flow catalytic converter doesn't cost much, cleans fairly close to as well as the stock converter on there, and adds close to the same volume and performance gains that removing the stock converter and having none on there at all does.
Yay for doing it by hand then! That will probably last about an hour tops.I was craving meat REALLY bad. plus, my mom gets really hot, so I was uncomfortable. So I have to really stretch.