Agility city 50 problem

[Linards]

Hello!

I changed on my agility city 50cc cylinder to 80cc.

But i cant get more power out of it.

It rides fine till i get to 50-55km/h and then it starts to chokes up and twich.

SOME TIMES it start to twich and then it stops and go up to 60km/h.

I cant understand if its fuel problems whit carburator(original carburator) or it is problems whit air consumption.

I have unrestricted CDI (NARAKU), change the air filter , and i tried jets from 100-125.

Tried another not original carburator from ebay but ir won't even start.

[ThehardcoreFTW]

What air filter did you change to? A free-flowing one or did you just replace the original filter with a new one?

If the last situation is the case: You`re jetting way too big, aim for +-90

[Linards]

I just changed the original air filter. The jet is also stock one, forgot what size exactly but i think 92-96.

Now i think that the CDI is bad, check the RPM and it go only 6500-7000.