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Old 02-26-2007, 12:09 AM
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Re: Catalytic converter question

Quote:
Originally Posted by J-Mech
You absolutely do not want back pressure. Unless you have a ford diesel. they have sensors on the exhaust to measure it. Which is stupid. Let the damn thing breath!!!!!!!!
Ummm, theres something you need to understand about exhaust gas velocity. Contrary to popular belief, throwing on a 3" muffler system will actually decrease exhaust gas velocity and the exhaust gas isn't pushed out as fast as a stock system. Its like the analogy of a garden hose and you putting your finger over the end. What you need to understand is that you need to compromise between exhaust velocity and backpressure, too much or too little of either is bad. NA hondas need backpressure, a little bit of it is a good thing.
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