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I have a 2011 135i with 7DCT and Procede, I can definitely notice a huge difference in performance with the AC on. It is super sluggish and laggy. I swear I lose about 80 hp because it feels worse than running stock maps with AC off. With AC on, even with 75% throttle at 4k rpm at 30 mph (with the boost gauge showing a constant ~10 psi) the acceleration is still so slow. I hear a lot of engine noise, like it is struggling to do what I ask of it. With most of my normal driving with AC off, I rarely use more than 25% throttle, rarely go above 3k rpm (boost gauge rarely shows more than 5 psi briefly), I get a pretty swift kick of that low-end torque and the engine is super smooth and running effortlessly.
Is it possible that Procede is pulling timing or some other safety feature to protect the engine?
I previously had a 2008 335i with 6AT and an earlier version of Procede and did not remember AC having such a huge impact on performance. It was noticeable but not nearly as extreme.
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