2002 325i rough idle

Hi guys I just bought another e46 from a friend for next to nothing.



Here's the symptoms, the car starts fine. However, it misfires when at idle, there's a noticible whistle/vacuum leak and I hear a popping or backfiring sound in the intake manifold. I pulled a whopping 9 codes:



p1343 - misfire cylinder 1 with fuel cut off

p0300 - random misfire detected

p1083 - fuel control limit mixture too lean bank 1 sensor 1

p0102 - mass or volume air flow circuit low input

p1085 - fuel control limit mixture too lean bank 1 sensor 2

p1344 - misfire during start cylinder 2

p0171 - system too lean bank 1

p0174 - system too lean bank 2

p1347 - misfire cylinder 3 with fuel cutoff



I know it's alot. But got the car for a grand. Any help is appreciated