My 4k would go into:
One of the performance exhausts - not sure which brand.
JB1 (N20) Tuning upgrade.
Ok, my 4k has just run out.
328i M-Sport, Estoril Blue, Carbon XP 35 Tint, front heated seats, black Dakota, Sports Suspension, Anthracite Headliner, HUD, Pro Nav, Sunroof, hk 600w, Bi-Xenon, 19" 403M wheels, Reversing Camera, DAB+, Xenon, BT Ext Connect.