Data from the first R&D session. On the fly map switching works, but many bugs and kinks to work out. You know, BMW problems! The main issue is figuring out boost control between the throttle, wastegate, valve lift, and the PS2 itself. I believe ECUTek needs to find the table that is causing the car to think it is overboosting. They tried a few different things but ended up collecting a lot of data to figure out where it lives in the coming weeks.
ECUTek logging/dashboard is way better than bootmod3. Just an OBD/Bluetooth dongle that connects to your phone/tablet., and the app is very well engineered for what it is. Coolest feature we have working is an adjustable torque slider in the app. At the min setting it gives full torque, at halfway it reduces peak torque by 100 ft-lbs, and at max reduction it reduces by 150 ft-lbs. That's plenty of control for me to play with, and let's me essentially dial back to stock power. I'm going to be getting used to full power for awhile anyways. Eventually that feature will be possible by taking over the HP and TQ displays on the head unit and using the cruise control toggle to adjust.
First image is the before/after comparing Bootmod3 Stage 2 (Dark Red) with a solid first pass custom tune that is still extremely conservative (light red). I believe the boost targets are virtually identical accounting for altitude (17 PSI), but now requires less baby-ing the throttle to get reliable, repeatable power. Bootmod3 could fall on its face up top if you opened the throttle too early. HPFP is only sagging to ~2100PSI so I shouldn't need an XDI or Spool upgrade yet.
Second image is a slightly better pull where the dip isn't as furious, but from the previous day which I believe was cooler.
I love data. I wonder if I'm the only X3 with ECUTek in the US currently?