This may be a dumb question.... please don't hate
 

06' R53 Stock MCS except for following mods:

15% pulley, Alta CAI, colder plugs, kingsborne wires, screamin deamin coil pack, magnaflow catback

Am I running lean? Do I need to upgrade injectors?

Thanks for the input.

Unless you have any part failures, this parts combo looks like a solid setup to me. Put 91+ octane in her and enjoy.

With your mods the stock 340's are fine, you could possibly benefit from the 380's but only with a custom tune or JCW re-flash.

ya, if you do injectors, i think you have to computer tune to compensate. otherwise, your setup looks good!

You wouldn't have to do a re-tune with the 380's but then that sort of defeats the purpose.