# Refresh car with some lost power and milage?

**URL:** <https://forums.speedlife.net/t/refresh-car-with-some-lost-power-and-milage/122091>\
**Category:** SON240sx Off Topic\
**Created:** [February 24, 2009, 11:26am UTC](https://forums.speedlife.net/t/refresh-car-with-some-lost-power-and-milage/122091 "2009-02-24T11:26:31Z")\
**Posts on this page:** 1\
**Showing post:** 30

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**Author:** ![Hacknik](https://avatars.discourse-cdn.com/v4/letter/h/ba9def/32.png) [@Hacknik](https://forums.speedlife.net/u/Hacknik)\
**Post date:** [February 24, 2009, 3:03pm UTC](https://forums.speedlife.net/t/refresh-car-with-some-lost-power-and-milage/122091/30 "2009-02-24T15:03:38Z")

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> [@FS: Scion Tc Floor matts](https://forums.speedlife.net/t/fs-scion-tc-floor-matts/20420/5):
>
> 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.

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