So here is the way it is calculated...

EOIT is X lo res periods (B3702) after the boundary (which is typically 6.5).
So...... 6.5 x 65 = 422.5 BTDC
Injector fires 5.5 (stock at normal coolant) after the boundary it means 6.5-5.5 = 1 x 65 Lo Res Periods = 65 BTDC.

Hope this helps.