I've had the Dr. Vanos in for couple of years with no issues. The only thing worth mentioning is that on every Dr. Vanis I've seen, the solenoid housings rust up. Probably from media blasting.
So, if you go with Dr Vanos, hit the solenoids with some clear or aluminum colored silver before you put it on.
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers