Miata Turbo Forum - Boost cars, acquire cats. - Catalytic Converter Shootout

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- - Catalytic Converter Shootout (https://www.miataturbo.net/engine-performance-56/catalytic-converter-shootout-85540/)

jacob300zx

08-13-2015 06:50 PM

Catalytic Converter Shootout

Great article from 2008 was just posted.

Catalytic Converter Face-Off | Articles |

AlwaysBroken

08-13-2015 07:18 PM

Interesting, it seems to basically only affect CO and idle HC.

Thinking back, I think my old honda didn't actually have a working cat. Its hydrocarbons only dropped to something semi-normal around 1100 rpms. I got through smog in CA by fiddling with my idle to find a window where the RPM and HC were both barely legal.

arghx7

08-16-2015 01:37 PM

I wish they would have measured backpressure with the different cats.

Also, that kind of emission test underrepresents changes in emissions because the engine is warmed up.

Stealth97

08-16-2015 07:00 PM

I was kinda hoping to see videos of somebody shooting holes in catalytic converters

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