1994 Honda Civic LX 4 Cyl 1.50L
The car sounds like it has an aftermarket exhaust on it (very loud) but it has a stock muffler.
Has approx 176000 miles. The problem is all the time. The check engine light is not on and no other warning lights come on.
Nissan Technical Advisor 7/11/2011
Look underneath and check for exhaust leak which causing the increased exhaust noise.