BMW has all-new ECU software to detect tunes as told to me personally by a BMW NA field tech. Too many warranty claims suspected to be caused by tunes, especially with the M3/M4 platform with the spun crank hub S55. Hopefully, the B58/S58 has fixed that, as the ZF transmission should be able to handle your tune. BTW the X3M comp is rated at 503 HP, is overkill for most people. Initial builds will be close to MRSP (depending win your CA relationship), but with the impressive X3 M40 is an option, highly doubt that pricing such as the M2 MRSP will hold long term after the initial order wave.
M's have most options/packages standard, as X3M has Vernasca leather standard ($1,700 X3 M40 option) where as X3M comp is standard extended Merino leather. Other standards are:
Harman Kardon surround sound audio system ($875 X3 M40)
Navigation with Apple Car Play compatibility ($1,700 X3 M40)
M Sport Differential ($1,300)
Adaptive M Suspension ($700)
Net $6,275 X3 M40 standards.
X3M options are:
Driving Assistance Plus Package
Executive Package (heated steering wheel, heated front and rear seats, parking assistant plus, head-up display, wireless charging, WiFi hotspot and gesture control)
The tune to accomplish the X3M numbers is not available via Dinan, as this would have to be at least a Stage II to add 188 HP/ 73 lb-ft. Reason for Dinan is the warranty coverage.
The B58 in the X3 M40 is impressive, as I'm sure its a blast to drive especially when optioned with the M Sport Differential & Adaptive M Suspension. My only seat time in the X3 M40 was driving from the PC over to BMW Manufacturing during my F83 PCD pick-up (December 2017).
The X3 M40 is a well designed and engineered. Hope you are all enjoying