Probably around 61-63 jet unless you Ran it already with 66 jet yet.
50 to 1 good synthetic oil .
My setup was 14.12 with metal mesh filter and plastic cap, Techno bullet exhaust, 26×24 gears 61 jet. I got 42 mph with good take off .
A biturbo has a bigger header so more jet maybe and maybe more speed too.