T1 according to the track. Of course Bruce describes the 20 turns actually being about 8 if you do not count each apex as a turn.
So --Big Bend at LRP would be Turn 1 – not T2/3
Hence Bogie --T1 - T4 onto Candy Mountain straight could be 2 turns or some crap like that. All of it is good.
Speaking of which, one of the Ottawa people was impressed I took T1 AKA the Kink flat out in the ti – It was so slow you had too! ( actually under acceleration in 5th --1:1 ratio)