need help with my modification

[sk8_vocal]

Guys i need help...my engin is all stock except i just took of my air box and changed into a [glow=red]simota power filter[/glow] and a [glow=red]GPR streetfight exhuast[/glow]...but my top speed drop for 140km to 100km..what should i do? pls help me...

 

[P@simuno]

it's normal because you took off your filter but your accelaration is faster than now or you may try to adjust the a/f of your carburator.

 

[He Man]

@sk8_vocal
you may do jetting to match your new air filter