Get the MagnaFlow 444005 Universal Catalytic Converter, California Grade and CARB Compliant. It keeps the check - engine light off. Its universal design fits a wide range of vehicles, though cutting and welding are needed. Made of highly corrosion - resistant stainless steel, this converter assures top - notch quality. It meets or exceeds California Air Resource Board requirements and has passed extra tests for legal use in California and CARB - restricted states for listed vehicles. Compatible with many cars like 2001 - 2002 Audi Allroad Quattro, 2005 - 2006 Chrysler Crossfire, and more.

Using this MagnaFlow catalytic converter is straightforward. First, make sure your vehicle is on the list of compatible models. Since it's a universal design, you'll need to do some cutting and welding to fit it properly. It's a good idea to get a professional mechanic to handle this if you're not experienced. As for maintenance, check it regularly for any signs of damage or corrosion. If you notice the check - engine light coming on again, it might be time to inspect the converter. Keep it clean and free from debris. Also, make sure to use the right type of fuel in your vehicle to avoid any unnecessary stress on the converter. This will help it last longer and perform at its best.