Jonathan, the cdi mods are only for rev limiters broadly speaking.
I've derestricted two scooters today.
A Honda 2t 50cc
Was doing 33 mph now hits 45 mph
A lexmoto gladiator 4t 125cc
Was doing 55 mph
Now does 70 mph
These were quick derestricts. Both can no doubt be made to go faster.
No exhausts were removed and no cdi s touched.
Do a bit of reading on here.
You need, a bench grinder, a small selection of different roller weights and a permanent marker pen to derestrict any " twist and go" scooter