Originally Posted by
Redcivic
The cat is glowing red (clogged). She work for the city in environmental services so she is not willing to have it cut out or anything.
Replace with a cheap header and add a cat downstream like the D16Y8 setup? You'd need to extend the O2 sensor wiring, but you'd stand to gain power and economy while keeping the pricetag much lower than an OEM replacement.