I have a 49cc kaliber and put a performance pipe carburetor and a bore kit now it will bog down at 45 mph when it did 43 mph before?
Quite a few number of possibilities:
1) You're not getting enough fuel (your carburetor may need adjusted)
2) You're not getting enough air (your carburetor may need adjusted, you may need a performance air intake)
3) Your carburetor:
--float type
may not be able to keep enough gas in the fill bowl to keep up with the fuel need of the engine
--diaphragm type
same as with the float type, but the diaphragm cannot pump in enough fuel to the carburetor to keep up with the consumption of the engine
4) Could be a problem with your CDI if it has one. If it does, might want to look into upgrading to a racing CDI (and the speed\rpm governor\limiter might also be a part of the CDI which might be what is cutting you out when you go above 40-45mph)
Good Luck!
I can't give a definite answer but hopefully the above checks will help you out.
How can you make your 49cc pocket bike faster?
One way to make a 49cc pocketbike faster is to get a performance airfilter, or a new muffler, or a new carbureator. You can find all kinds of parts for pocketbikes and gas scooters at www.partsforscooters.com they have performance parts of all kinds of scooters and poketbikes and dirtbikes and they also have stock original parts that came with the vehicle you purchased
How do you increase speed and performance of a 49cc motor scooter other than removing the restrictor?
google (performance parts for 49cc engine) Answer turning in the mixture screw will cause a lean burning condition that can severely damage your engine! if your scooter has a restrictor washer on the variator you can remove it to gain a higher gear and gain some speed, some scooters have a restrictor on the exhaust which can be replaced with a new gasket. also the CDI has a rev limiter, you can get a performance…