if your are looking for an exhaust for your bimmer i would suggest a Remus exhaust or supersprint. not those huge basketball size exhausts u see in the rice-mobiles. As for the intake ECIS is a great cold air intake (www.ecisbmw.com) try that out. You can also look into Dinan and turnermotorsports. If you were from the import scene for jap cars forget all the products that you are use to. German cars use german products.