t.q bro jep3003 for your advice.
I have few friends using safc2 on his city, they manage to gain 5-10hp (depends on other modds as well). Most of them, dyno at Links and GT Auto, sunway. And it prove by the diagram.
And i already tested my stock 2005 city vs safc2,kn&N filter & muffler modd 2005 city, and i'm lost. The car with safc2 look more Aggressive and faster on top speed.
I manage to reach easily 160km/h and very2 hard to reach 175km/h (take very look straight road to reach 175km/h). But my friend's car with safc2, reach 188km/h very easily and it strongly prove by his RSM that state 188km/h.
But now, my budget is only allow me to buy safc1 if the price is rm500. then must get ready to spend rm150 for installation and dyno test.