@ tamour
my bike is honda cg125 deluxe, its 2006 model, and i m using iridium racing plug, its has a gud pick but lesser than classic 125. But top speed is great 120+, Now back to the problem, i fit this airfilter and bike does missing even after rejetting the carb. But when i replace with stock filter, there is no missing no problem at all. I ve also replaced the high flow air filter keeping in mind tht there could be some problem in that filter but results were same then i made a Y and fit two filters with two branches of Y and one stem to the carb but still no desired results. Plug is 100% OK coz if there is missing then it ll cause missing with stock filter too
this is the whole story, science says tht greater the air and increasing the fuel will improve in top speed and pick. Thats increasing the compression ratio. I know i m on the right track but there is modification of other minimal things too. May be replacing the jet of carb with bigger ones or something like tht. but......................... Again the same problem, need expert opinions