Refresh car with some lost power and milage?

[Hacknik]

@Lucidsnow

some ppl say running 89 gas instead of 87 on a ka runs SLIGHTLY better but i dun think i ever felt a difference. also if ur car knock sensor is shot u shuld replace it. it shuld improve ur car since if its shot the timing goes to shiz. lastly. just do all the maintenance as u know and gts states. maybe get some ngk iridium spark plugs.

i been drifting with a cai/underdrive pulley/altima fan on my ka 2years ago and now i drifted with bone stock to the intake box. to be honest that power difference is nothing that you can even feel a difference. dont bother wasting the money and just keep it how it is and beat on it. the ka stock is invincible as long as u got oil in it. literally riding redline all day at track until my tires pop. u want to be faster use light weight 15" racing rims not forshow. ul feel most difference in the rim/tire setup.

I second this statement (about KA’s being invincible).
Don’t bother doing anything unless you plan on adding a turbo.