if I put a k&N cold air system and different muflers on my o7 1lt 6 speed what type of fuel mileage increase could I expect. and how much will i have to spend??

 

To save on mileage -- don't spend anything - just keep your foot out of it. -- --

 

You probably wouldn't see any mileage from making those changes.

 

That's another way, but who can keep their foot off of the pedal.

 

more air in, more air out, does not equate to better mpg, however do your mods and then have it "tuned" and you will get better mpg!

 

you will see some improvement. i average almost 33 mpg on highway. it used to be 27 before my mods. my mods: headers, x-pipe, magnaflow, FAST intake, vararam.

better flow of air in and out EQUALS BETTER FUEL MILAGE. a set of heads will increase mpg too.

i saw a huge improvement when i first modded my car with Vararam, x-pipe and magnaflow.