Needing more of a family ride i had to sale my GTS 5.0 . So pretty much always liked BMW, i seen this one in the dealer lot were i sold my mustang and put the money down for the e90.  Well first i can not have an unmodified car so of course back to the drawing board.  So project black mamba budget build was underway.  Went to Craigslist and found brand new in box an AFE drop in high flow filter for $20.00. Went ahead and also did the charcoal filter delete.  Next big mod was a 330i 3stg intake manifold swap i purchased at a local junk yard for $150.00. Installed that myself too. Next of course was headers i purchased from Team2Fast from Germany for $235.00. Primary cat delete, secondary cat delete,resonator delete and muffler delete. Then for stopping power i purchased from Canada cross drilled rotors and brake pads . would have to say my headers were bang for buck. I pretty much followed BPC from North Carolina on specifics for my build. They are really good with getting the most power out of the 328i. next is a tune from BPC from North Carolina.