I was wondering if there’s a way to improve power on my GT while staying legal in California. I currently have BBK long tube headers, BBK throttle body, and cold air intake. The car has catalytic converters removed. Is there a way to add high flow cats and and o2 sensors? My check engine light is on for the O2 sensors. Trying to make this car fast but still staying legal in California.
02 GT
- Thread starter Momo8789
- Start date
First red flag is Long Tube Headers. Illegal in CA. You'll also need CARB sticker or proof of the TB and CAI E.O. giving it acceptance in CA. You need 4 Cats on the exhaust. You also need 4 O2 sensors. Each side has one before first Cat and one after second Cat. Easiest thing to do is find a exhaust section that has been removed or buy new and not guess. However, they WON't fit long tube headers so those need to be changed. Of course, if you for some reason have a CARB E.O. for those headers, great (but I doubt it). Sorry.
Last edited:
