BMW 330i Workshop Manuals
If you choose to do auto repairs for your BMW 330i then it is usually recommended to possess a Workshop Manual to use as personal reference in the event that you want to know easy methods to strip off a certain part much like the Exhaust and install it again in the correct manner.
BMW 330i Workshop Manuals will give targeted diagnostic wisdom for the car therefore if something is playing up it helps you understand what the issue is and the best way to resolve it. You can then assess if you can do this by yourself or if the job is just too big you could make a reservation for your 330i right into a local garage.