Ordered the AP3 for my N55-based 2011 135i from Mike. Asked for fast delivery for slight bump up in shipping costs. I allways get fast responses and great service from Mike, even on week-ends. I totally recommend this seller.
Hooked up my AP3 to my laptop to make sure I had the latest firmware. Turns out I did not. Loaded Stage #1 agressive on my car (stock, with no bolt ons), as I have easy access to 94 Octane gasoline (Petro Canada). I took the car to the track, and the increase in torque and speed build up in any gear is crazy ...
I need to upgrade my brake pads now because of this mod ... ;-)
2011 X3 35i with M pack + 2011 135i w/6SPMT | 255 square tire setup | Quaife 3.46 LSD | Diff lock down bracket | Bilstein B8+Swift SpecR springs+H&R FSB | CDV delete | BMS Oil Tstat bypass | ER FMIC & CP | N54Tuning DP | GC Street Camber Plates | M3 FCA +guide rods+RSFB's+Tranny mounts | Manzo toe arms | Cobb Stg2 agressive tune | Hawk DTC70 brake pads | RB SS brake pistons | Goodridge SS brake lines | Custom brake cooling ducts