# NickAlero's '98 CL

**URL:** <https://forums.speedlife.net/t/nickaleros-98-cl/252522>\
**Category:** Builds\
**Created:** [June 6, 2010, 11:05pm UTC](https://forums.speedlife.net/t/nickaleros-98-cl/252522 "2010-06-06T23:05:23Z")\
**Posts on this page:** 1\
**Showing post:** 114

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**Author:** ![KrazyKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/krazykid/32/6371_2.png) [@KrazyKid](https://forums.speedlife.net/u/KrazyKid)\
**Post date:** [November 15, 2010, 10:03am UTC](https://forums.speedlife.net/t/nickaleros-98-cl/252522/114 "2010-11-15T10:03:02Z")

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> [@new chick](https://forums.speedlife.net/t/new-chick/37188/38):
>
> :lol
> 
> Would spark plugs do it? Air filter wasn’t the only thing I changed this weekend.
> 
> My car is also rated at 19 city 27 highway. I’d be lucky to see 17 city and 25 highway before.

a combonation of both, MAYBE. but going from 17 to +2/4 MPG over stock is a stretch for just an air filter change. Also the ratings are usually with a stiff tail wind and over inflated hard ass compound narrow tires to squeek everything they can out of them for numbers sake!

it takes alot to make a big difference in mileage. rolling resistance, rotational mass, wind resistance, dt loss, weight, etc all play a bigger part when a motor is running good to start… performanc mods dont really do much unless they are drastic changes.

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