Originally Posted by 98CoupeV6
Sounds more like a loose heat shield. If your cat is bad you'd get awful nitrous oxide smell inside the car when accelerating up hills. I know because mine went bad at 150k and I didnt change it until 210k
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You mean you'll get an awful sulfer smell inside your car, if you're getting a nitrous oxide smell then that means one of your nitrous bottles sprung a leak and you'll probably start laughing your head off.:loco: