So after reading different threads for weeks on how to upgrade my stock v1 on my cimatti city bike i decided to give it a shot. However, i didn't see much gain.
Here is what i did:
15.15 dellorto SHA
EV mamba pipe
bored out intake to 15mm
port matched exhaust and intake on cylinder
I have tried running a #62-#68 jets, but i can still not get above 30 mph. I have the 38.8mm cylinder for the 30 mph model, so i am confused as to why i have seen no improvement.
Is there anything blatant that i am missing? Any help would be greatly appreciated, thanks.