[Paul]

I drive a 2004 Chevy Impala SS. What I want to know is if there are any natural tweaks that can be done to the engine to improve horsepower, without adding parts. If so, where can I go online to learn about them?

 

[miiiikeee]

increase the air intake size of the filter box.

 

[miiiikeee]

increase the air intake size of the filter box.

 

[miiiikeee]

increase the air intake size of the filter box.