Bumping this thread again as Dinan E70 LCI software is on sale again, even cheaper than their last sale.
For the 50i, stage 2 is $695.03 (normally $926.70...though it was $3000 just a year or 2 ago). Bumps HP to 494, torque to 579.
https://www.dinancars.com/product/d9...eries=&mid=X5/
For the 35i, stage 2 is $564.47 (normally $752.63). Bumps HP to 355, torque to 401.
https://www.dinancars.com/product/d9...eries=&mid=X5/
My 50i is going into the dealer this Friday for a warranty repair...considering maybe/finally doing this while it's in there?