Use a less restrictive filter like K&N cap burung or other cheap car air filter which you can DIY. Than retune carbs, Change sprocket combinations, BRT CDI + standard cutting muffler (Not too big manifold but larger outlets). And finally find a race cam which slightly higher profiles (FZ150 cam or a cam that is not more than 5.2mm lift). This mod is for standard bike only.

Actually stock valve is stronger than Faito Titanium valves. Alot of people using stock valves and spring in they big block machine for daily use and sometime go drag for fun, they never damage it also. So don't under estimate the stock parts But if got money I suggest u change to FZ150 valves spring. It hardness is more consistent, and the best thing it is stock

i also bough hi cam for 135lc but will swap that with shyan fz cam..

yes, correct but not malaysia police is under law and regulation but kenot charge u, just keep u under suspect for investigation for 48 hrs & do wat ever they like with u such maybe giv u little food, strip off your clothes with underwear oni, lock you up and other thing which will not have any injury tat can prove tat they do anything....they kena shoot and u go thru the above, worth it????

Law is good in a way but is also a bad in another way, double edge sword....
anything to add if i miss any....

get things right before put in your statement, sensitive issue can bring bad things to you...as u work & experience more things, you ll understand as time goes on....

Ayam reserved !!!