Dyno's are completely worthless at times. What concerns is me is the fact that you didn't feel a difference after install. I noticed a big difference after my AA flash, and a nice difference after the Rogue pulley install as well. Have you contacted AA yet?
2009 E92 M3/DCT/Alpine White/Fox Red/Carbon Leather
OE Tuned 402 whp & 303 wtq/Gintani X-pipe/MXP Axle Back/Rogue Pulley/AFE Stage 2/Cosmetics By IND & EAS
HUGE THANKS: Gintani, OE Tuning, and EAS