If ure stock car can hit 180kmh .. its enuf .. no need more than that cause ure not going anywhere faster.
1. Original K&N airfilter wiith air mass sensor.
2. high grade spark plug cables (thicker ones 10mm) high grade spark plugs.
3. 4-2-1 Extractor with custom pipings. (dont use the one selling cheap like RM300 fullset, cause tat not for power, but for sound only.)
4. front (engine bay) & rear (in car booth & not under car) strut
5. High cam (if u are interested)
6. Short Shifter
7. test ure car without A/C on.
P/S: U can add also extra stickers on ure car to increase more horsepowers ;) .. jk jk