Kooks Green Cats on Stock headers?

[Cory S]

Damn. Good to know! How did you know they went out. Was it just visual or did your car have different behavior?

Mostly visual, but it definitely had to be limiting exhaust flow.

Sponsored

 

[JL5.0]

My Kooks "green" cats were smoked within 10K miles. You will also still throw a catalyst code with them unless you manipulate the O2 sensor metering/spacing.

Where you running about 1000 hp?