Hi everyone! I'm new here and I am considering to get a Z4 3.0. I am very much into my engine mods and would like to know what are the best intake/ induction kits for the z4 and exhaust systems. (Heard about Hamann and AC Schitnzer) and if the Hamann ECU is any good? I would like to know how much I could increase the BHP figures by and improve the 0-60 time. ( I do understand that its not all about BHP figures etc not looking to start a whole "get a Z4M" discussion here! lol Just want to know the best performance mods for the z4 3.0) I would also like to know if BMW Main dealers do fit after market parts such as the Hamann Front Bumper and side skirt, AC Schitnzer wheels, Aero Spoiler and if I wanted the M suspensions fitted, would I be able to get those fitted at an Authorized BMW Main dealer? Anyone done any engine mods to their Z4 on here, I would really appreciate some feedback! Thank guys. Sorry for all the questions.