It would be. I've heard people with 2010 135 with the N55. They all been talking about how they like the low end torque kicking in earlier than before. And I believe after April production, the 2010 X6 will be getting the N55 as well with the 8 Speed Auto. Also announce will be the BMW X6 xDrive40d for 2010 as well.
335xi Sedan 6AT | Weather(70-85°F) | N54 Tune Comparison Chart || N54 Turbo Upgrade Comparison Chart
-PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps)
†Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 | 0-60 in 4.0sec || †Cobb E30 LT (35% Ethanol/65% 93 Octane) | 0-60 in 3.9sec
AR Design Catless DP | BMS DCI + OCC | ETS 5 FMIC | Alpina B3 Trans Flash |235/265 19" Michelin PSS