Catted vs. catless?

[Irace86.2.0]

Carbon monoxide has a 230x greater affinity for binding to hemoglobin than oxygen. With a concentration of 12,800ppm in the air, someone would go unconscious after 2-3 breaths and would be dead in less than three minutes. A catless exhaust produces between 30,000-100,000ppm of CO versus 1000ppm, so don't go sniffing very close to your catless tail pipes or running your car in a closed garage or in poorly ventilated spaces long.

https://www.abe.iastate.edu/extensio...icles-aen-208/

https://en.wikipedia.org/wiki/Carbon_monoxide#Toxicity

Some say, well, it is just the precat. The precat warms up faster than the main cat and reduces emissions until the main cat heats up, and it helps to warm the main cat. Even then, the emissions from the first 30 seconds can be equivalent to driving a car for 100-300 miles. Without the precat, the main cat may take longer to warm like over five minutes and potentially as long as 10-15 minutes. I only have a five to ten minute drive to work or the gym, so doing such a modification could make my car equivalent to a catless car in emissions.

Seems like an electronically heated catalytic converter system for a main cat with no precat should be better in every way.