Quote:
Originally Posted by Shaneajanderson
NOx is dealt with by EGR, cat is only to burn unused fuel and CO, neither of which are necessary.
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The EGR may reduce NOx, but it does not prevent the formation of it together. Cats are necessary for NOx, CO, and unburned hydrocarbons. All of which have negative impacts on health.
Technology Details | MECA
Even if you do gain a minimal amount by removing the cat, it will come at a greater cost to the environment and human health. If your cat is clogged there is a thread on here on restoring it. It sounds like it is cheap.