my exhaust has been scraped on the floor too much. How would I know there is a problem with it. I have the hks carbon ti muffler and it dented in the back. I didn't feel any air leaking but is there any precautions I should take. What could happen to a car with a bad exhaust?

 

If the dent is big enough to cause a restriction in the exhaust flow. This will rob you in HP and create high temps.

Have a muffler shop take a look if there is a leak.

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