I have a stock cat connected to an HKS super dragger exhaust. My car sounds like s**t as of yesterday. At first i thought it might have been a hole somewhere in the piping, but maybe it's the cat? It doesn't smell bad, so i'm not sure if it's the cat. Something does rattle as i'm accelerating though, which is a sign of a bad cat. One thing i did notice is that it doesn't sound raspy when i'm reving it in park or neutral (autotragic). is that a sign of a bad cat? If i had a hole in the piping, would it make the same shitty raspy sound in park? I don't have time to jack up the car and take a look at it until the weekend, so i was hoping maybe you guys can help diagnose it. If i need to order a cat, i'll order one before the weekend so it will be here in time. Thanks.
