I would say the only downside is a reliance on a stocked supply of meth and it's a tough habit to kick. This unit is going to really shine when paired with the VT535 non intercooler supercharger kit. Someone with that setup needs to contact Shiv and work out an install.
'13 35i M-Sport X3 | JB4 Stage 1 | BMS Intake | H&R Springs | Gloss black grill | CF Wrap and Coded by me | Recaro Child Seats
'15 M3 DCT AW/SO | RKP Diffuser | P3 | M Perf Spoiler | iND Exterior Trim | Recaro Child Seat