2001 mustang strong exhaust smell
I am looking at a 2001 V6 mustang with 5 speed to buy for my kid. It has about 150k miles, has factory intake, and aftermaket muffler (semi loud). The service engine light is on and I can see the 02 sensor is not hooked up. The car starts, runs, and drives good, but the exhaust smells really strong (rich maybe). Does not smoke when started or revved up. It is dirt cheap so I am willing to put some $$ in it. Any ideas? I have read that aftermarket exhaust may cause this. Anything else I can look for?