After I installed a new corsa exhaust system with ceramic cats in my 98 rt/10, when I got on the accelerator hard I would get an awful smell from the exhaust in my cabin (top off). After three months, I finally got my car back on a lift, and there are four places in the where you use a torque clamp on when one pipe is inserted into the other. Well, all four were leaking. One was pretty bad. About an hour ago, I just had the four areas welded, NO MORE SMELL, except for a very, very faint odor when I get on the accelerator really hard. Glad that is gone. I guess clamp ons are not as good as they say they are.
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