Then you 'll need this. Dont let your car run w/o catalytic it will affect your performance and gas mileage.

STREET LEGAL with a ceramic catalyst unlike other catalytic converters which are just hollow test pipes with no ceramic catalyst
High quality T-304 full stainless steel body and heat shield cover
Designed for optimal flow
Contains a flow-efficient ceramic catalyst ribbed body for strength
Funnel inlet and outlet for smooth exhaust flow
Use to replace failed or damaged OEM converters
Gaskets and hardware included
2.5 inch inlet and outlet
Direct bolt-on without modification
Utilizes factory 02 sensor position
Compatible with all stock and aftermarket exhaust systems and headers
10-15 HP increase (more with turbo/supercharger)
Lifetime warranty from manufacturer defects