OK, this may be a stupid question, but once again I can't find the answer. Which Catalytic Converter is recommended for a 2003 Bonneville SSEi? I am thinking of going with the Magnaflow, and I am not sure if I am right, but I was thinking of the Universal model with one sensor port, and 2.5 inches. Is this right? Or do I need 2.25 inches? Thanks again for the help!
If your car has less than 80k miles, you can get your CC replaced for free at the Pontiac dealership. They unbolt the exhaust from the motor and replace the whole exhast, CC, pipes, muffler and all. Unless you're just replacing it for the fun of it.....
I just replaced mine on my 2000 SE with the Magnaflow 94836. I got it on EBAY for cheep, it already has the O2 bung welded in. It sounds great with the factory Bassani muffler and the resonator removed.
That is the high flow version. I got it for $80 from Preformancepeddler on EBAY, they were great. If you have any questions about it just call or e-mail Magnaflow. Their Cats are made by a company called Car Sound, here is their web address http://www.car-sound.com/ I picked up about 5MPG with this cat and a K&N filter.