when stock was 180km/h n after modified also same...180km/h at 5k rpm...can't go more than that...btw the modification i've made were:
1) mega raizin voltage stabilizer n grounding cable
2) denso iridium spark plug
3) apexi open pod air filter
4) mid to tail performance exhaust with s-flow muffler
now waiting to change to either hotbits 4-1 extractor or 4-2-1 extractor
are u sure by removing the spoiler will increase the top speed?? i thought there is a rev cut on 5k rpm at 5th gear since i go straight or downhill oso same, but is that quite possible...hmmmm~