actually, i think dynos makes mistake about 750 with automatic transmissions.
Here is my bmw 750i E38 dyno results http://e38.ee/bmw/dyno%20nitro%20130...%20rattast.jpg
dot-line is stock and line is with nitro (about +100hp)
Here is another stock 750 result http://www.robertlevinson.com/seven/...tock_750iL.jpg
almoust same, as mine stock
And here is with manual tranny http://www.robertlevinson.com/seven/..._PROJECT_X.jpg
Rob has changed tranny and output-intake folders(mybe +30hp) but manual transmission can't put more power to engine (dyno results was 290hp vs 335hp)
Here is some more pics and storyis bout my BMW http://www.cardomain.com/ride/2170697