full throttle boggs down then picks back up??????

[s37en]

2011 kymco super 8 2t---- de restriction mods done. nothing else, all else is stock.... When i give it full throttle it bogs down right away and doesnt jump off the line like it used to... well kind of used to, this bike is not that fast.  Is this a fuel/air mix problems? or am i in for trouble.. ppelase advise.

s37en

[scootergrisen]

Maybe problem with carburetor.

Is there a accelerator pump on your carburetor ?
If there is, its pupose to give a extra squirt of fuel. Maby its not working.

Anyway try cleaning the carburetor inside and se if there is a difference.
Also try cleaning the airfilter.

[ilkinandr92]

If you changed exhaust u need to get a higher main jet size