"ritchiekidd" > wrote in:

> I'm a rookie mazda owner.
> I'd like to know if anyone has suggestions about how to increase the
> horsepower via minor/inexpensive changes, such as exhaust or air
> filters?

Dunno about "minor" or "inexpensive", these are relative terms. For a tweak
that will improve performance check he

http://www.diamondmotorsport.com/greenmiatas.htm