Dear Scotty,

I bought my first car - a 2003 BMW 325i with a 5 speed manual transmission. It has an aftermarket cold air intake and aftermarket headers. The guy I bought it from sold it to me for $2200 and it has 170k miles on it. It's smooth as butter, beautiful body condition - except it has an exhaust leak. He said he thinks the leak is at the headers. How do I go about finding/fixing the leak, how expensive should I expect it to be, and do I have to baby the car until I get it fixed, or can I have fun driving it? Thanks!

OBD2 Scan Reads : Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank 1, H025 Heater Control Circuit Bank 2 Sensor 2, Evaporative Emission System Leak Detected (large leak), System Too Lean Bank 1, System Too Lean Bank 2, Post Catalyst Fuel Trim System Too Lean Bank 1