Northstar Engines and System Technical Discussion Discussion, aftermarket catalytic converter in Cadillac Engine Technical Discussion; I need to replace the catalytic converter on a 98 STS. Does anyone
know what brand, size, or part # ...
I need to replace the catalytic converter on a 98 STS. Does anyone
know what brand, size, or part # is needed to replace this cat. I want
an aftermarket cat so I can have a custom exhaust set up. I'm thinking,
new cat, remove resonator, and dynamax mufflers. All thoughts greatly
i went with a 2.5Inch magnaflow hi-flow cat converter, it completely enhanced my corsa exhaust tone. I love it, deeper tone, a little more torque . Its a universal for a 99 STS,. and this is what they gave me. I suggest this one.
i also went 2.5 so it matches the 2.5inch corsa...i dont want the car too loud. right now its perfect.