Hi Henry,
Thanks for your questions.
1. DCT transmissions are faster shifting than Manuals, plus drivers do not have to be proficient at "heel and toe" for smooth down shifting for corners. Also with DCT there is less weight transfer when shifting so better tire track contact resulting in faster lap times. Comparable tests tests have DCT cars faster than MT. The CCC decided to add 5 HI (1.5 PI), for these new generation auto transmissions.
2. Looking at a lot of 135i dyno runs it appears hp between the two engines is very close, so we left it at 330 crank hp. BTW BMW kept the same 300 hp rating.
https://www.google.com/search?sxsrf=ALeKk016fEtiRAE49
3tDDmGh4AWkT5ocg:1609783745532&source=univ&tbm=isch&q=Dyno+BMW+2011+i135&sa=X&ved=2ahUKEwiP0MTi74LuA hVITd8KHV7lAM4QjJkEegQIAhAB&biw=1742&bih=850#imgrc=F1s0GT8MVQRISM
A .4 PI or 1.1 PI won't much difference. If you are a newbie to track, then getting instruction and experience will be best gains you can make.
JohnP
Thanks for your questions.
1. DCT transmissions are faster shifting than Manuals, plus drivers do not have to be proficient at "heel and toe" for smooth down shifting for corners. Also with DCT there is less weight transfer when shifting so better tire track contact resulting in faster lap times. Comparable tests tests have DCT cars faster than MT. The CCC decided to add 5 HI (1.5 PI), for these new generation auto transmissions.
2. Looking at a lot of 135i dyno runs it appears hp between the two engines is very close, so we left it at 330 crank hp. BTW BMW kept the same 300 hp rating.
https://www.google.com/search?sxsrf=ALeKk016fEtiRAE49
3tDDmGh4AWkT5ocg:1609783745532&source=univ&tbm=isch&q=Dyno+BMW+2011+i135&sa=X&ved=2ahUKEwiP0MTi74LuA hVITd8KHV7lAM4QjJkEegQIAhAB&biw=1742&bih=850#imgrc=F1s0GT8MVQRISM
A .4 PI or 1.1 PI won't much difference. If you are a newbie to track, then getting instruction and experience will be best gains you can make.
JohnP
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