The M3 maps do not have an autotune feature. The specific tunes allows for a more aggressive tune. Running race gas won't cause any issues and you'll still see gains, just not as much as running a race gas specific map. You could adjust Map 2 or 3 as a race gas map accordingly.
'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 | JB Stage 1 | RKP Diffuser | P3 | M Perf Spoiler | iND Exterior Trim | Recaro Child Seat