I started with mine set at 3500. I felt the RPMs dipped too low at the point of launch so Mike emailed me two additional tunes for a 4000 and 4500 rpm launch. I found the 4000 worked best for me. It takes about 5 min and a laptop to switch tunes.
'09 E90 M3 SG | VF620 SC | BPM Sport coding | AA Catless Exhaust | KW V3 | BMW Performance Wheel | Alpine 8K Eyes | 355M Style Wheels | Recaro Child Seat
'13 X3 DSB with M Sport | H&R Springs | Gloss black grill | Coded by me